This is because of natural selection; since polar bears live in a rough environment, natural selection gives them more fur, more muscle, and can go longer without food
The most logic answer is B.
It's a difficult question to answer. <span>A stream channel is the physical confine of a </span>river, and<span> consists of a </span>bed<span> and </span><span>stream banks, but also the path of water and sediment flowing within the stream banks.
Considering this info, and since we don't have any other clue about the mass of water we're talking about, I'd go for the B, is formed when water carries minerals into the ocean.</span>
Answer: Pathology
It is a field of clinical biology, where the condition of the body is tested with the help of tests of body fluids and physiological factors. Fluid samples collected include blood, urine, semen, and mucus. Other factors tested include temperature, blood pressure, etc. All this helps in accurate diagnosis of the disease.
Answer:
A. Respiration
Explanation:
Animals breathe in oxygen and release carbon dioxide
