Natural selection is when an animal does by nature like by natural causes or the weakest dies while the strong survive while artificial is only making the best traits survive not naturally and keeping the ones with the best traits alive
The correct answer is macromolecules are very large hydrocarbons constituted, what makes up macromolecules is hydrogen, oxygen, nitrogen and sometimes sulfur, I hope this is correct and helps you.
Krill, snails and abalones are primary consumers
Answer: Both infect host organisms
Explanation: A virus is a microscopic particle that can infect the cells of a biological organism. ... They are similar to obligate intracellular parasites as they lack the means for self-reproduction outside a host cell, but unlike parasites, viruses are generally not considered to be true living organisms.
