Evolution is caused by genetic mutations that become favorable for survival.
For example if a bird has a mutation that gives it a longer beak and it lives in an environment in which a longer beak lets the bird catch more food- the longer beak becomes a favorable trait.
Now the bird is able to survive “better” thus it lives longer(due to its ability to catch more food). Because of this it reproduces more and passes the trait on to its offspring.
Overtime this mutation takes over the population of birds in the area.
Answer:
A
Explanation:
they we're brought to Japan for pets, but once they got too big they started releasing them in the wild
Answer: the correct answer may have taken place independently by a variety os species descended from aquatic ancestors.
Explanation:
Scientists think that life started in the oceans as early as 4 to 4.2 billion years ago.
