Diffusion is important to organisms because it is the process by which useful molecules enter the body cellsand waste products are removed. Digested food molecules (amino acids, glucose) move down a concentration gradient from the intestine to the blood.
It brings a transport liquid into close contact with all cells in the body
Answer:
Snow is precipitation in the form of ice crystals. It originates in clouds when temperatures are below the freezing point 0 degrees Celsius or 32 degrees fahrenheit.
Well there is Google for a reason. "Definition of nucleic acid". "What is nucleic acid". I'll give you the definition though. A complex organic substance present in living cells, especially DNA or RNA. The molecules consist of many <span>nucleotides linked in a long chain.</span>
