Question

1. the diagram below represents two processes that occur in some living organisms. x + carbon dioxide + water $xrightarrow{process a}$ high - energy sugars + oxygen $xrightarrow{process b}$ carbon dioxide + water + atp. describe how an increase in x would impact the end products of process a. 4. base your answer on the information and graph below and on your knowledge of biology. the graph shows the amount of oxygen in earths atmosphere from 3500 million years ago to present. scientists can use this information to learn more about the evolution of different species. oxygen and our planet. amount of oxygen in earths atmosphere. million years ago (mya). source: adapted from https://www.indiana.edu/~ensiweb/lessons/foot - topo - 10inch.pdf. identify when during earths history plants most likely first appeared. describe evidence from the graph that supports this claim.

Explanation:

3.

Process A is photosynthesis where carbon - dioxide, water and light (represented by X) are used to produce high - energy sugars and oxygen. An increase in light (X) would increase the rate of photosynthesis, leading to more high - energy sugars and oxygen being produced as long as other factors like carbon - dioxide and water are not limiting.

Plants perform photosynthesis which releases oxygen. The graph shows a significant rise in oxygen levels starting around 2500 million years ago. This increase in oxygen is likely due to the appearance and proliferation of photosynthetic plants.

Answer:

An increase in X (light) would lead to an increase in the production of high - energy sugars and oxygen, the end products of process A (photosynthesis), assuming other factors are not limiting.

4.