Question

part 2: how does oxygen dissolve into water?
there are two main ways oxygen gets dissolved in water. the first occurs when air mixes with water. more oxygen gets mixed in when the water is moving around a lot, like when waves crash, or when water flows over rocks.
the second way oxygen gets into water is when it is released by producers such as underwater plants or other aquatic life that use photosynthesis. phytoplankton are single - celled organisms that add oxygen to water in this way, through photosynthesis.

1. what do you think typically happens to the phytoplankton population in the spring, when solar energy to the gulf of mexico region increases after winter?

(dci: ps3.d; ccc: 4.3)
a stay the same
b not enough information
c decrease
d increase

Explanation:

Phytoplankton use photosynthesis. Solar energy is needed for photosynthesis. More solar energy (in spring) means more photosynthesis, so more phytoplankton growth and population increase.

Answer:

D. Increase