Define natural selection.
What will be an ideal response?
also known as "survival of the fittest," is the more prolific reproduction of individuals with favorable traits that survive environmental change because of those traits; this leads to evolutionary change.
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Check all of the reasons that temperature is important for organisms.
_____ It affects the rate of biochemical reactions. _____ It affects the fluidity and rigidity of plasma membranes. _____ It has a direct effect on blood cell production.
In the fossil record, there is evidence that feathers were produced by which of the following?
A. mammals B. birds and some dinosaurs C. birds and some mammals D. birds E. dinosaurs
What are the first antibodies produced by a plasma cell?
A. IgM B. IgA C. IgE D. IgD E. IgG
If you take an antibiotic by mouth for a long period of time, you may become deficient in certain vitamins. How can this be true?
What will be an ideal response?