Which of the following is not a possible pollutant?
a carbon dioxide
b. pesticides
c.fertilizer
d.all are possible pollutants
Answer:
c is the correct answer of this
Carbon dioxide is not a possible pollutants.
A goal taking which of these lengths of time to achieve is most likely to be a
short-term goal?
A. 25 weeks
B. 25 decades
C. 25 years
D. 25 months
Answer:
A. 25 weeks
Explanation:
It's the shortest amount of time.
Hope this helps! :)
Answer:
25 weeks
Explanation:
25 minutes would probably be a short term goal. If it takes someone only 25 minutes to do, that would be a pretty short and easy goal. It COULD be 25 weeks.
Los métodos hormonales son eficientes porque: * A: impiden la entrada de los espermatozoides C: Se inhibe (no se desarrolla) la ovulación B: El óvulo jamás se encuentra con el espermatozoide D: Los espermatozoides quedan atrapados y no llegan al óvulo
Answer: C: Se inhibe (no se desarrolla) la ovulación.
Explanation:
Los métodos anticonceptivos se utilizan prevenir el embarazo no deseado, evitando que el esperma fertilice a un óvulo. Hay distintos tipos, los cuales se clasifican en:
Anticonceptivos hormonales: Contienen hormonas, tales como estrógeno y progesterona, que previenen la ovulación (es decir, la liberación de óvulos de los ovarios). De esta manera, al no haber óvulo disponible, por mas que hayan espermatozoides, no va a ocurrir ninguna fecundación. El método mas conocido es la píldora o pastilla anticonceptiva. Anticonceptivos de barrera: Proveen una barrera física que impide la fecundación al impedir el encuentro entre el óvulo y el espermatozoide. Por ejemplo, el uso de preservativos o condones. En estos métodos, se impide la entrada de los espermatozoides, no se encuentran con el óvulo y la esperma queda atrapada dentro del condón. Anticonceptivos permanentes: Proveen un método permanente como por ejemplo el Dispositivo Intrauterino que se coloca en el tracto uterino con una vida media de meses o años y posee un efecto espermicida que mata a los espermatozoides (por lo que no lograrán encontrar un óvulo). Otro ejemplo es la vasectomía, la cual es una cirugía que corta los conductos deferentes que transportan a los espermatozoides por lo que ya no pueden salir de los testículos para producir la fecundación (quedan atrapados dentro de los testículos, no entran al tracto uterino y no encuentran al óvulo)Tanto los métodos de barrera como los permanentes, no inhiben la ovulación aunque si impiden que el óvulo se encuentre con el espermatozoide. Entonces, los métodos hormonales son los únicos que logran inhibir la ovulación. Las píldoras que poseen las hormonas previamente mencionadas pero fabricadas sintéticamente. Las mismas mimetizan el efecto de las hormonas naturales producidas por el cuerpo, alterando el ciclo menstrual regular y así evitan el embarazo ya que no habrá óvulo disponible para fecundar. Además, también pueden alterarla mucosidad en el cuello del útero para que los espermatozoides no pueden atravesarlo y llegar al óvulo. De todas maneras, el objetivo principal y mas importante de los métodos hormonales es bloquear la ovulación.
Help with this question ! :
Describe the difference between local and systemic side effects
Answer:
Action may be topical (local), enteral (system-wide effect, but delivered through the gastrointestinal tract), or parenteral (systemic action, but delivered by routes other than the GI tract).
If it does not get digested once when in small intestines what organ might not be working well?
Answer:
Small intestine
How did Darwin's observations on the Galapagos Islands lead him to the idea of evolution? Use the example of the tortoises mentioned above in your explanation.
can mercury diffuse in our body using simple diffusion ?
Answer:
No,mercury can't diffuse in our body using simple diffusion.
Explanation:
It is only slowly absorbed through the skin, although it may cause skin and eye irritation. Elemental mercury droplets may be absorbed through eye contact. Ingestion is not an important route of acute exposure as almost no elemental mercury is absorbed through the gastrointestinal tract.
besides sugar, what other ingredients that can be used as the substrate for yeast fermentation?
can anyone help me w this question?
Answer:
In addition to oxygen, they require a basic substrate such as sugar. Some yeasts can ferment sugars to alcohol and carbon dioxide in the absence of air ...
In addition to oxygen gas, for the fermentation the basic substrate such as sugar is required. Some yeasts are required that can ferment sugars to alcohol and carbon dioxide in the absence of air.
What is Fermentation?
Fermentation is the process in which a substance is broken down into a simpler substance. Fermentation is the metabolic process through which organic molecules such as carbohydrates, such as starch or a sugar are converted into acids, gases, or different types of alcohols in the absence of oxygen or any other type of electron transport chain.
Yeasts are the organisms which preferentially metabolize sugars that are converted principally to ethanol molecule and carbon dioxide gas, however they can utilize different carbon sources, such as amino acids, organic acids, polyols, alcohols, fatty acids, and other organic compounds, depending on the species which undergo metabolic reaction.
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How many genetically different gametes can this cell form?
Answer: The human genome consists of 23 pairs of chromosomes. There are therefore 223 different kinds of gametes that one individual can produce.
Explanation:
I learned 'bout this-
what is the basic unit of matter?
Answer: Atoms constitute the fundamental units of matter, and are a constituent of each element. In large part, the mass of an atom is determined by its positively charged protons and neutral neutrons.
Explanation:
ya welcome BCHHHHHHHH
Define (Chlorophyll)
Thank you!
Answer:
a green pigment, present in all green plants and in cyanobacteria, responsible for the absorption of light to provide energy for photosynthesis. Its molecule contains a magnesium atom held in a porphyrin ring.
Answer:
Chlorophyll is a green pigment that is in all green plants and cyanobacteria. It is responsible for the absorption of light that provides energy for photosynthesis.
Explanation:
A dependent variable is:
A. Changed to test a hypothesis.
B. Measured to show the effect of a change.
C. Kep the same to make an experiment a fair test.
C
D. Collected to draw conclusions.
Answer:
B. Measured to show the effect of a change.
Answer:
B
Explanation:
Measured to show the effect of a change
In activating cytokine receptors, a: Please choose the correct answer from the following choices, and then select the submit answer button. Answer choices cytokine dimer interacts reversibly with a receptor homodimer. cytokine monomer interacts reversibly with a receptor homodimer. cytokine dimer interacts reversibly with a receptor heterodimer. cytokine monomer interacts reversibly with a receptor heterodimer. None of the answers is correct.
Answer:
ewan ko hahahah ano ba dapat sagot comment kayo hahahha
This Roman snail, this cuttlefish, and this mussel have similarities and differences in their body structures. What does the information about these structures tell you about the ancestors of these species
Complete question:
This Roman snail, this cuttlefish, and this mussel have similarities and
differences in their body structures. What does the information about these
structures tell you about the ancestors of these species?
a) None share an ancestor population because different species cannot share an ancestor population. It is a coincidence that these species have some of the same body structures.
b) The Roman snail and the cuttlefish share an ancestor population, but they must not share an ancestor with mussels because mussels have no radula.
c) All three species share an ancestor population, but Roman snails and
cuttlefish share a more recent ancestor population. This is why they share
the radula structure.
d) We cannot make observations of ancestor populations from the past. It is
impossible to explain ancestors with only the information about the body
structures of different species.
Answer:
The correct answer is option C. All three species share an ancestor population, but Roman snails and cuttlefish share a more recent ancestor population. This is why they share the radula structure.
Explanation:
The three species belong to the mollusk phylum, and to the placophore group.
Each of them belongs to a different class.
The Roman snail belongs to the Gasteropod class, The cuttlefish belongs to the Cephalopod class, The mussel belongs to the Bivalve class.The tree classes share a common ancestor from which all the placophores evolved. Among them, we can mention the monoplacophore, gasteropod, cephalopod, bivalve, and scaphopods. Three branches diverged from this common ancestor. The first one originated the monoplacophore. The second one originated the common ancestor of gastropods and cephalopods. And the third one originated the common ancestor of bivalves and scaphopods. The tree-mentioned species inherited the mantle and the radula from their foreign common ancestor. But later in time, individuals that originated bivalves lost the radulla. This is why the three species have a mantle, but only gastropods and cephalopods have a radula. When each of these classes evolved, they developed their own traits,
Gastropods → muscular foot used for moving Cephalopods → pallial cavity for swimmingBivalves → byssal threads to attach to the rocksYou will find an image in the attached files that will help you understand this explanation.
What are wildfires? (With detail)
Answer:
A wildfire is an unplanned fire that burns in a natural area such as a forest, grassland, or prairie. Wildfires are often caused by human activity or a natural phenomenon such as lightning, and they can happen at any time or anywhere. In 50% of wildfires recorded, it is not known how they started.
Answer:
sự kiện lửa phát sinh trong một khu rừng, tác động hoặc làm tiêu hủy một số hoặc toàn bộ các thành phần của khu rừng đó.
Explanatin
This is the question I need help with.
Answer: Brown beetle
Explanation:
It's brown so it blends in with the ground better.
Answer:the answer would be D
Explanation: the brown beetle is SUPPOST to be the tan colored beetle and the the ENVIORNMENT they are asking for is the new desert, in which case the brown beetle (or tan beetle) will have better adapted to the new envionrment (the New desert)
Human activities would have the least immediate impact on A. The formation of fossil fuels B. Coral bleaching C. Overpopulation D. Eutrophication
Answer:
A. The formation of fossil fuels
Explanation:
Human activities would have the least immediate impact on the formation of fossil fuels because the fossil fuels are not affected the formation of fossil fuels. The formation of fossil fuels takes millions of years because it is a very slow process. Human activities greatly affected the coral reef bleaching, over population and Eutrophication due to the release of pollutant gases in the atmosphere that greatly impact the environment.
deficiency symptoms of molybdenum in photosynthesis
Answer:
Molybdenum deficiency symptoms in most plants are associated with a build-up of nitrate in the affected plant part. This is a result of poor nitrate reductase activity. Symptoms include: pale leaves with interveinal and marginal chlorosis (yellowing) and necrosis (scald);
Consider these phylogenetic trees. The first tree is based on physical characteristics. The second tree is based on structure, genetics, and evolutionary history. 2 phylogenetic trees are shown. The first tree has 3 branches that go to duck, platypus, and opossum. The second tree has 2 branches that go to duck and platypus. Opossum branches off of the platypus branch. Which can be concluded from a comparison of the two phylogenetic trees?
Complete question:
Consider these phylogenetic trees. The first tree is based on physical characteristics. The second tree is based on structure, genetics, and evolutionary history. Which can be concluded from a comparison of the two phylogenetic trees?
Phylogenetic trees are not subject to change. Classification can change with new discoveries and evidence. Classification does not change with more evidence. Phylogenetic trees are inaccurate.Answer:
2. Classification can change with new discoveries and evidence.
Explanation:
In phylogenetic trees, two species are more related if they have a recent common ancestor. On the other hand, two species will be less related if their common ancestor is not a recent one and is located far away in the tree.
The phylogenetic tree is composed of,
• Lineages → These are the taxonomic groups of interest placed in the extremes of the lines called branches.
• Nodes → These are the ramification points, which are also known as divergence points. They represent the location of the most recent common ancestor.
• Root → This is the older common ancestor that all lineages share. The first one in the tree.
Two or more lineages are more related to each other if they share a recent common ancestor. This means that they all diverge from the same node.
Two or more lineages are less related to each other if they lack a recent common ancestor. This is, the node from which these lineages diverge is placed far away in the tree.
There are also different phylogenetic relationships between lineages.
• Apomorphies
• Plesiomorphies
• Homoplasy
In the exposed example, we have two trees.
Tree 1 ⇒ based on physical characteristicsTree 2 ⇒ based on structure, genetics, and evolutionary historyTree 1 reflects that the three species share a common ancestor that is far away in history. From this common ancestor (the blue point in the image), the duck first diverged. Later in evolution, Platypus diverged, and finally, Opossum diverged. The three species are morphologically well-differentiated from each other.
Tree 2 suggests a common ancestor of the three species (the blue point in the image), placed far away in history. From this common ancestor, the duck first diverged. But later in evolution, there was a second branch that diverged, and later originated Platypus and Opossum. According to the information provided by structure, genetics, and evolutionary history, Platypus and Opossum share a most recent common ancestor (the red point in the image).
Both trees provide equally important information. However, tree 2 is more detailed about evolutionary events because it involves many aspects of the animals´ history. Using one of the trees or the other, or both, will depend on the goals of the experiment.
The conclusion we can get from this comparison is that as long as there are discoveries and scientific advances, there will be a constant influx of information useful to recreate or explain evolution. Classification will keep changing with discoveries and evidence.
Answer
Classification can change with new discoveries and evidence.
Explanation:
I got 100% on the test
El efisema pulmonar,provocado princioalmente por el consumo de cigarro, es una lesion que genera destruccion de los alveolos y, por lo tanto, zonas en las que no se produce el intercambio de gases ¿que consecuencias puede tener esta lesion en el organismo?
Answer:
El enfisema pulmonar disminuye la cantidad de tejido pulmonar, disminuyendo de este modo la cantidad de oxígeno que llega a la sangre (hipoxemia). El enfisema está asociado a diferentes trastornos incluyendo infecciones respiratorias recurrentes, pérdida de peso, debilidad muscular e hinchazón de los miembros inferiores.
Explanation:
El enfisema pulmonar es una enfermedad causada por la destrucción de los alvéolos pulmonares la cual está asociada a un aumento en la dificultad para respirar. Las principales causas de esta enfermedad son la exposición continua al humo del cigarrillo y otras sustancias nocivas para la salud, como así también a contaminantes presentes en la atmósfera. El enfisema pulmonar va progresivamente destruyendo las paredes alveolares pulmonares y los vasos sanguíneos que las recorren, disminuyendo así la elasticidad pulmonar, aumentando la proporción de aire que recorre los pulmones y de este modo también aumentando la distensibilidad pulmonar. Esta enfermedad disminuye la capacidad de oxigenar la sangre, generando una sensación constante de falta de aire (disnea) y cuadros progresivamente más severos de hipoxemia. Cuando el enfisema pulmonar se encuentra en grado avanzado, la única opción viable es el reemplazo del órgano dañado mediante un trasplante pulmonar. El enfisema puede estar asociado a infecciones respiratorias recurrentes (resfriados, gripe), pérdida de peso, debilidad muscular e hinchazón de los miembros inferiores (tobillos, pies y piernas).
Which of the following is not an accessory organ of digestion?
Where is the options.........
Answer:
Uhm wheres thy options? did ya forget to put 'em
Explanation:
Which is NOT a consequence of increased
temperatures around the world?
A. Melted glaciers
B. Flooding of coastal areas
C greater incidence of skin cancer
D melted polar ice caps
Melted glacier, increased cases of skin cancer, melted polar ice caps are the recent consequences of raised temperature around the world. thus, option" B " is correct.
What is global warming?Due to the increase of greenhouse gases like carbon dioxide, chlorofluorocarbons (CFCs), methane etc. are responsible for the Global Warming which is causing harmful effects to all organisms
The consequences of global warming leads to melting glaciers, skin cancer causing radiation, which will lead to submerging of coastal areas in near future.
Hence, option "B" is correct.
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with reference to enzymes, what does "denatured" mean?
Answer:
Enzymes work consistently until they are dissolved, or become denatured. When enzymes denature, they are no longer active and cannot function. Extreme temperature and the wrong levels of pH -- a measure of a substance's acidity or alkalinity -- can cause enzymes to become denatured.
Sodium metal reacts whit hydrochloric acid to produce salt and hydrogen gas. What are the reactants in this chemical reaction
Answer:
Na (sodium) and HCl (hydrochloric acid)
Explanation:
The products are the salt and hydrogen gas
Whenever you see the word react it means those are the reactants (usually whatever compound comes before and after the word). Because they are reacting with each other.
Whenever they say "is produced" those are the products
How do white blood cells protect the body against infections
Answer:
White blood cells, which are also called leukocytes or white corpuscles, are a cellular blood component that does not include hemoglobin, have a nucleus, are motile, and protect the body from infections and diseases through ingestion of foreign materials and cellular debris, destruction of infectious agents and cancer cells or production of antimicrobials.
Explanation:
There are 4,500 to 11,000 cells in the white blood of a healthy adult person per cubic mm of blood. During the day, fluctuations in the number of white cells take place; lower values during rest and higher during exercise are attained. The quantity of white cells increases abnormally, while the number decreases abnormally, Leukopenia.
Intensive physical activity, seizures, extreme emotional response, pain, pregnancy, labor, and specific conditions such as infections and intoxications may increase the counting of white cells. In reaction to some types of infections or medication, or in conjunction with certain illnesses such as chronic anemia, malnutrition, or allergy, the number may drop.
How do the process of DNA replication and the laws of inheritance help cells and individuals pass on their
traits?
DNA copying is otherwise known as DNA replication which is the process of producing 2 identical copies of DNA from one original DNA molecule during cell division. DNA copying is important because it generates variation during sexual reproduction which leads to evolution. Also, DNA copying helps in transfer of information or characters from the parents to the offsprings.
Mendel studied traits with only one mode of inheritance in pea plants. The inheritance of the traits he studied all followed the relatively simple pattern of dominant and recessive alleles for a single characteristic. There are several important modes of inheritance, discovered after Mendel’s work, that do not follow the dominant and recessive, single-gene model.
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help mee guy to complete this please please please please please
Question doesn't see clearly than how to help
1. What is Preservation?
2.Why does refrigerator and freezing help preserve food for a longer time?
Answer:
q.1 ans
Preservation—The protection of cultural property through activities that minimize chemical and physical deterioration and damage and that prevent loss of informational content. The primary goal of preservation is to prolong the existence of cultural property.
Explanation:
q.2 ans
Cold temperatures help food stay fresh longer. The basic idea behind refrigeration is to slow down the activity of bacteria (which all food contains) so that it takes longer for the bacteria to spoil the food. ... Refrigeration and freezing are two of the most common forms of food preservation used today.
1. Which statement best describes the effects on an organism when
their environment changes?
O Some changes to an organism have helpful effects and some have harmful
effects.
Changes to an organism's environment often have no effect on the organism.
All changes to an organism's environment are harmful.
All changes to an organism's environment are helpful.
Answer:
firsttttttttttttttt.........................
Jules does not like when Hayden spends time with family. Jules thinks Hayden
should want to spend all free time with him. Hayden has tried to explain how
important family is and asked him to understand. Jules still gets upset every time
Hayden does things with family. This should be a red flag; the relationship might
be abusive. *
True or false?
Answer:
True
Explanation:
Jules shouldn't get upset with Hayden, and should know boundaries.