Answer: c. to have two copies of each chromosome
In this question in which is the major source then of free oxygen in the earth's Proterozoic atmosphere is being produce by the evaporation of the ocean water. Hope this answer would be of big help to this assignment then.
B. Comsumers have less food and shelter.
<span>Population sizes decrease at higher trophic levels.
</span>
I believe at such a point the new information is assessed and the original information is reassessed. Scientists perform many tests and research both sets of information in an effort to find out where, how and why, these ideas differ and , if possible, how they can be interrelated. Considering that science is not rigid and can be changed as new information is presented and new things discovered.
