Type 1 diabetes occurs when your immune system, the body's system for fighting infection, attacks and destroys the insulin-producing beta cells of the pancreas. Scientists think type 1 diabetes is caused by genes and environmental factors, such as viruses, that might trigger the disease.
Three-letter sets, or codons, of nucleic acids "code" for individual amino acids. Amino acids form proteins.
An exothermic reaction<span> is a chemical </span>reaction<span> that releases energy by light or heat. It is the opposite of an </span>endothermic reaction<span>. Expressed in a chemical equation: reactants → products + energy.</span>
Should be A. Species have changed over time.
Answer:energy
Explanation:all activities of life including physical and chemical require energy to proceed
