Photosynthesis by producers right
Answer:
genetic modification competitors increase
Explanation:
The fish developed the gills because of <em>genetic modification</em>. Because the fish are now able to swim in deep water, their <em>competitors</em> in shallower water will have less food. Likewise, competition for food among deep-water fish that eat the same types of food will <em>increase</em>.
99% of calcium is found inside the cells of the body.
A adaptation is a trait that helps an organism survive and reproduce.