Answer:Humans raise large numbers of cattle for food. How will these herds of cows affect Earth's atmosphere? Increase C02 in the atmosphere 6. Analyze: In many tropical rainforests, people clear land by cutting down trees and burning them
Explanation:
Amino acids are the building blocks of proteins and are made from basic amino group (−NH2) and an acidic carboxyl group (−COOH) as well an organic R group (or side chain) that is unique to each amino acid. they are made from carbon, hydrogen, oxygen and nitrogen atoms
Answer:
18 is the nuclesus, 20 is the smooth endoplasmic reticulum and 21 is the golgi apparatus and 19 is the microtubes and 17 is the vacules.
Explanation:
Answer:
B- Surface tension is caused by water molecules repelling one another.
Explanation:
Four conditions are needed for natural selection to occur: reproduction, heredity, variation in fitness or organisms, variation in individual characters among members of the population. If they are met, natural selection automatically results.