Answer:
Since marine life can only see blue, n creature would have evolved anything but blue colors because that would not have helped their survival
Explanation:
The total energy from an isolated system is constant; energy can be changed from one form to another, but can't be created or destroyed.
Mutations are not a mechanism for evolution.
Answer:
HYDRA
Explanation:
The nerve cells are scattered in each layer of the body wall and these neurons send information from sensory organs. Based on the given choices above, the organism that has a nerve net that allows it to respond to a stimulus in a coordinated way is the HYDRA.