The answer to your question is bacteria
I think the correct answer from the choices listed above is option A. It is the alveoli that is composed of single layer <span>surrounded by a network of capillaries. These are used to allow oxygen and carbon dioxide to move from the lungs to the bloodstream.</span>
The answer will be A) because without chloroplast and chlorophyll the plants will not grow this will keep the plants to be alive
Answer:
Venus: It has an extremely high pressure at its surface.
Mars: It experiences large dust storms
Mercury: It is the closest to the sun.
Earth: Its atmosphere is about 20 percent oxygen
Explanation:
