Answer:
C.) builds new tissues antibodies, enzymes, hormones, and other compounds: repairs damage
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When a population or group of something is declining, and the amount that decreases is proportional to the size of the population, it's called exponential decay<span>. In </span>exponential decay<span>, the total value decreases but the proportion that leaves remains constant over time. so the radioactivity would be declining proportionally to the size of radioactive area.
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It is vascular cambium !!
They produces secondary xylem inside aslso known as wood and bark towards outside which has many components. For more info comment !!
It occurs equally during night and day. Even if sunlight is not present, the plant needs to breathe, just like all other living things. The way that the plant respires during day changes during night. At night, it inhales oxygen and exhales carbon dioxide (just like we do). This is why you should never keep a plant in your bedroom because at night it will take away the oxygen from the room.
There is little plant life near the source of a river or stream because due to the rapid flowing of water throughout rivers and streams plant life cannot put their roots deep into the soil because they will be uprooted by the fast flowing water
