Answer:
Charles Darwin was a naturalist from the 1800's. He developed the theory of natural selection which became the foundation of modern evolutionary studies. Natural selection is the survival and reproduction of individuals and how they adapt.
Answer:
Explanation:
If you sleep on your back, a pillow that is too thick can strain the curvature of your spine and your neck muscles. If your pillow is too thin, side-sleeping can strain the muscles on the side of your neck
I think the answer is d. uniform habitat... let me know if i’m wrong
