Answer:
May be this can help
But we've never been to the planet's core. We haven't even come close. The central point of the Earth is over 6,000km down, and even the outermost part of the core is nearly 3,000 km below our feet.Aug 13, 2015
Answer :<em> That trough time, a specie of animal, plant, bacteria can change.
</em>
<em>
</em>
<em>When a life form reproduces, one of its"babies" may be different from its parents because of genetic mutation. </em>
<em />
D. Proteins help control substances by making trans-membrane channels.
