C, decrease.
If the trait is easy to be seen by predators, they will be caught more often than those without the trait, thus reducing the frequency of the trait.
Answer: C & D
Explanation: I talked about this in my science club. They said C and D was the best answers.
Hope this helps you :)
A closed circulatory system is present in organisms with a circulating body fluid that is distinct from the fluid that directly surrounds the body's cells.
<h3>What is the circulatory system?</h3>
The circulatory system is an organs system that works to carry out blood cells to all cells in the body.
The circulatory system is fundamental for transporting oxygen and nutrients to all cells of the body.
A closed circulatory system is a special organ system where the blood cells are not circulating in body cavities.
Learn more about closed circulatory systems here:
brainly.com/question/989029
Answer:
An underground cavern collapsed
Explanation:
I did research
