Answer:
A new species being introduced in the environment, the species being forced to move and to adapt to new environments, a mutated individual reproduces with non-mutated individuals.
Explanation:
There are many different explanations for this question.
Answer:
1) They have a notocorda that serves as support through the back of the fish.
2) Gill bags. These organs are responsible for filtering the oxygen in the water.
3) A pineal eye that is sensitive to light.
4) A cartilaginous skeleton.
Explanation:
You would find the most organisms, whether it's plastic or a multi-cellular organism in the ocean. The oceans contains over 50% of all species on Earth.
The main function is to break down lactose in the body. when you are lactose intolerant (which most adults are to a degree) then tactasr is no longer funtioning properly and lactose isnt being broken down