Answer:
A.
Explanation:
Dinosaurs and old trees are samples of ancient earth which can be compared to the actual world showing the difference between now and then.
Answer:
Skin has three layers: The epidermis, the outermost layer of skin, provides a waterproof barrier and creates our skin tone. The dermis, beneath the epidermis, contains tough connective tissue, hair follicles, and sweat glands. The deeper subcutaneous tissue (hypodermis) is made of fat and connective tissue.
Answer:
The size of an amoeba cell is around 250 and 750 microns.
I think the answer is A. because if a habitat has more food than the surrounding areas, then the population would be more than the surrounding area or habitat. Hope this helped :p