Draw a neat labelled structure of heart and write about valves in heart

Answer:

I think C and D

hope it helps!

Answer:

Walk to places as much as possible to reduce co2 emissions from cars.

Explanation:

The levels of carbon dioxide is higher in the atmosphere than it was before because of the human activities, which is eventually leading to global warming. Carbon dioxide being one of the most important greenhouse gases is present in abundant concentrations in the atmosphere and there is a need to reduce the levels to have some relief from global warming.  

Some of the ways of reducing the levels of carbon dioxide in the atmosphere are:  

• Planting more trees as trees are mainly good at storing carbon by the process of photosynthesis.

• Another way to use photosynthesis to fight against climate change is the use of bio-energy with carbon capture and storage technique. It is the process of utilizing biomass as the source of energy in the power sector.  

• Another way to capture carbon dioxide directly from the air is by chemically scrubbing carbon dioxide directly from the ambient air, and then storing it either in the long-lived products or underground.  

Thus, there are some techniques, which can be implemented to reduce the concentration of carbon dioxide from the atmosphere.

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Answer:

i have this question too

Explanation:

The Answer to this is D.

Explanation:

1.(from Latin: carbo "coal") is a chemical element with the symbol C and atomic number6. It is nonmetallic and tetravalent—making fourelectrons available to form covalent chemical bonds. It belongs to group 14 of the periodic table.[13] Carbon makes up only about 0.025 percent of Earth's crust.[14] Three isotopesoccur naturally, 12C and 13C being stable, while14C is a radionuclide, decaying with a half-lifeof about 5,730 years.[15] Carbon is one of thefew elements known since antiquity.[16]

2.

Answer:

In the dehydration synthesis reaction (attached) , two molecules of the sugar glucose (monomers) combine to form a single molecule of the sugar maltose (macromolecule)

Explanation:

Macromolecules are formed from glucose by condensation polymerization.

Macromolecules are formed by the agglomeration of small molecules called monomers. These monomers are simple molecules that can be joined together to form a larger molecule.

Glucose can serve as a monomer that is joined together to yield macromolecules such as polysaccharides. These larger molecules are formed by the process of condensation polymerization in which a water molecule is lost.

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Answer:

In ecology, any force that affects the size of a population of living things in response to the density of the population (the number of individuals per unit area).

Explanation:

i hope that helped im sorry if i didnt:(

An antidepressant such as Prozac mimics the effects of the nurotransmitter serotonin, whereas a dopamine antagonist include antipsychotic drugs that block the action of theneurotransmitter dopamine.

Answer:

Unequal heating of the earth's surface causes temperature differences which cause pressure differences. Lower temperatures  cause higher air pressure. Wind direction is described as where the wind is coming from. For example a northerly wind blows from the north to the south. Usually when we talk about uneven heating of the Earth's surface we are discussing convection. The uneven heating results in some of the atmosphere to be warmer than other parts and changes in volume and pressure which result in updrafts and can cause thunderstorms and other violent weather.

Explanation:

Answer:

A. The equation for photosynthesis and cellular respiration are opposites of each other.

Explanation:

Cellular Respiration:

C6H12O6 + 6O2 → 6CO2 + 6H2O. Photosynthesis:

6CO2 + 6H2O → C6H12O6+ 6O.

Photosynthesis removes carbon dioxide from the atmosphere, and cellular respiration puts it back. Photosynthesis releases oxygen into the atmosphere, and cellular respiration uses that oxygen to release energy from food.

Answer:

answer is primary consumer

The component that is specific to the human cells is the genetic material.(46 chromosomes)

Answer: the answer is D

Explanation: the five levels of an organization are cells, tissue, organs, organ systems, and organisms so its sorta like the smallest to biggest! like a system inside of a system just like the planet cities inside of states inside of countries inside of continents inside of a planet!

Answer:

A neuron will generate action potentials more often when it receives more excitatory than inhibitory inputs

Explanation:

An action potential is a short term change in the electrical potential that travels along a cell. It occurs when an external stimulus is received by the cell membrane of a neuron resulting in the depolarization (a decrease in the difference in voltage between the inside and outside of the neuron) of the neuron and transmission of the action potential down the neuron.

A neuron receives both excitatory and inhibitory inputs from the many other neurons it is connected to at synaptic junctions. For an action potential to be generated in a neuron, the sum of the excitatory inputs must be greater than that of the inhibitory inputs.

Answer: D)

Explanation:

The highest trophic levels are of hawks and that is because they will be subjected to the greatest biomagnification.

Biomagnification is an accumulation of substances for example like toxins or pesticides that are found intolerant organisms. It is increasing as the trophic levels of a food chain increase.

The nutrient molecules with their breakdown products are proteins ,carbo,fats as per the observation.

Hydrolysis is a chemical response for the duration of which polymers (huge molecules) are damaged down into monomers (small molecules)

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Answer:

The correct answer is - must be honest and without bias or later change.

Explanation:

In an experiment to get the reliable and desired result, one should get collect the data from all possible sources and note it down for reference. This data should not be bias or not influenced by any external factor and solely based on the experiment or associated with the experiment.

Data that is calculated should not be change or edit to support the result or if not getting the desired result. Data should remain unchanged for an honest and unbiased experiment or investigation.

Answer:

A scanning transmission electron microscope has achieved better than 50 pm resolution in annular dark-field imaging mode and magnifications of up to about 10,000,000× whereas most light microscopes are limited by diffraction to about 200 nm resolution and useful magnifications below 2000×.

Answer:

True

Explanation:

An example could be the Yellowstone supervolcano; if it erupts, it has the potential to have a massive affect on the planet.

Have a nice day ^-^

Answer:

TRUE

Explanation:

TRUE

IM IN BIOLOGY AND HAVE DOING THIS FOR THE PAST 2 WEEKS!

TRUST ME ITS TRUE.

Answer:

Friction depends on the coefficient of friction which in turn depends upon the nature of the surface. Hence, this statement

is false.

Answer: My favorite song is see you again, That is my favorite  I am not sure that I have another favorite song

Explanation:

Answer:

talkin tennessee by morgan wallen

Explanation:

Answer:

Hi there, your answer to this is: It is an amino acid that cannot be made by the body. It must be obtained from eating certain foods.

Explanation:

There are 9 essential amino acids that we need in our bodies which are:  histidine, isoleucine, leucine, lysine, methionine, phenylalanine, threonine, tryptophan, and valine which can be found in foods that we normally eat.

Hope this helped :)

Answer:

C, It is an amino acid that cannot be made by the body. It must be obtained from eating certain foods.

Explanation:

Edge 2021

Answer: Alkali metals and alkaline earth metals both have chemical reactivity to air and water.  

Alkali are in group 1 of the periodic table. Alkaline earth metals are in  in group 2 of the periodic table. The main difference between alkaline and alkali is that alkali metals have one valence electron, when alkaline earth metals have two valence electrons.

Explanation:

Answer:

I-1 genotype = AA or Aa

I-2 genotype = aa

Explanation:

The trait in question is autosomal and dominant. Let us assume that the trait is represented by the allele A, the alternative form would be a.

I-1 individual is affected for the disease, hence he is either true-breeding AA or heterozygous Aa.

I-2 individual is not affected for the disease, hence, she can only be aa. For an autosomal dominant trait, an individual is either affected or free from the trait. There is no chance of being a carrier. Heterozygous individuals are affected for the disease.

Therefore;

I-1 genotype = AA or Aa

I-2 genotype = aa

Answer: In short, mass is a measure of how much stuff is in an object, while weight is the gravitational force that acts on that stuff. So basically, weight is the result of gravity. The conversion factor, g, (10N/kg on the earth) has units that divide out the kilograms and multiply by

Explanation:

i dont think that helped you sorry

Answer:

mass affects the weight of an object experiencing the effects of gravity

i can give an example for u if u want