cells are not the smallest unit of life because atoms are smaller than cells
Answer:
You have external defense systems, which include your skin, tears, mucus, saliva, stomach acid, cilia (small hairs) and helpful bacteria. The skin, nails and hair form the integumentary system, which stops dirt and pathogens from entering the body.
Upper surface of base of the skull
Answer:
humans and chimpanzees share a relatively recent common ancestor
Explanation:
someone else has asked the same question
Answer:
There are about 300 different types of species, but we've not explored even more than 50% of the ocean
Explanation:
