Answer:
A pengiun is the only bird that can swim and not fly
Explanation:
Answer:
This is great because in a changing eviroment (needing to change if they want to survive) they may reproduce sexually for genetic diversity, whereas if they are already well adapted to the area it is possilbe for them to pass on ALL of the traist that allowed them to survive in the first place.
Hope this helps :)
I would assume that it is because it is relatively close to earth.
to make the test fair and to make sure that you didnt make a mistake i.e. if you have an anomyous result