<span>True. When oxygen increases, an increase in aerobic organisms also occurs. The increase in atmospheric oxygen favors the appearance of these organisms. The increase in atmospheric oxygen favors the appearance of aerobic organisms. There are several consequences in the evolution of organisms that could use oxygen as the plants that are the main factories of oxygen in the earth and depend on atmospheric CO2 (photosynthesis).</span>
Answer:
a plate is subducted under when a oceanic plate merges or moves to a continental plate causing subduction.
Answer:
C
Explanation:
A and D just doesn't make sense, B is wrong because they have tourists that may spread diseases, so it should be C.
Let me know if you got it right.
A polder is a They are important because they are used at barriers to the nether lands.