Answer:
a) produced the oxygen in the atmosphere
Explanation:
- Prokaryotes are likely to first form of life on earth and they existed billions of years ago before animals and plants.
- As these prokaryotes can do photosynthesis so there most important function is produce oxygen in atmosphere for the evolution of aerobic life.
- At that time the conditions were harsh on earth so these prokaryotes are used to survive under earth like in oceans. They first produce oxygen in oceans.
- In eukaryotes photosynthesis emerge by endosymbiosis with photosynthetic prokaryotes.
D. False colors are added toimahes to make some structures more noticeable.
The nutrient is phosphorus
<h3>The phosphorus cycle</h3>
Phosphorus cycles between living components of the earth (biosphere) and the soil (geosphere).
The element's reservoir is mainly the sediments of the ocean and rocks. Phosphorus gets into the soil by weathering of rocks.
Plants are able to pick the element up from the soil and animals are able to get their phosphorus by consuming plants.
When plants and animal die, their body decomposes and the phosphorus in them enters the soil.
Thus, the cycle being referred to in the illustration is the phosphorus cycle.
More on phosphorus cycle can be found here: brainly.com/question/15020567
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