Air is made up of several gases, but the two most important gases are Oxygen and Carbon dioxide. Without oxygen, animals will die, and without carbon dioxide, plants cannot survive<span>. Food (nutrients): Living things need energy for function. Energy is needed to grow, reproduce, move, and to work.</span>
After a large meal, the pancreas helps by producing insulin, which helps break down sugars.
Answer: definetly A, food webs
Explanation:
the other options are not even related to organisms
<span>The answer is letter B.
Almost
all chemical reactions in life processes occur in solutions with water. It
is
the most abundant molecule found in living organisms. Most mammals, in fact,
are approximately 70% water by weight. About 2/3 of this water is present inside cells. The other 1/3 is present
outside cells (e.g in blood plasma or other body fluids).Without water the
proper transport and processes that occur with a cell will not efficiently
function therefore making the organism inefficient as well. <span> </span></span>