Explanation:
digestion begins in the mouth Where food is chewed into smaller pieces by the teeth the Tongue helps by moving these pieces around These pieces are covered by saliva Or spit saliva makes the food slippery so It's easier to swallow
T cell activation is initiated by an activated B cell.
The B cell presents antigens on its MHC receptors. The T cell recognizes the antigen bound to the MHC. There are other cosignals that fully activate the at cells but the antigen on the MHC receptor on the B cell is where it all starts.
If you stay in the water for too long your hand will shrink
Answer: Natural Selection
Explanation:
Natural Selection is the process by which the chances of the fittest organism to survive increases and rest of the organisms has less chances of survival.
The diversity of the organisms increases the survival rate of the organism. The natural selection shows that the fittest organism will have a greater probability to survive.
The more stable the organism more will be the probability of the organism to resist the change.
Xylem tissue that should help you out
