Answer:
2. We recognize living things by their shared features such as energy transformation or reproduction.
<span>d.
apply balanced forces
</span><span>
</span>
<span>Abnormal
behavior of cancer cells begins when a single cell undergoes
transformation, a process whereby a normal cell converts to a cancer
cell. Transformation occurs after a genetic change (mutation) in one or
more genes that encode for proteins in the cell cycle control system.
Because a transformed cell grows abnormally, the immune system normally
recognizes and destroys it.</span>
