Embryonic stem cells,
Tissue-specific stem cells.
It eliminates certain genetic diseases or bad traits for the flock.
1.) Enzymes are a type of protein that speeds up the rate of chemical reactions
2.) Catalase is an enzyme in the liver that hydrogen peroxide (H2O2)
3.) By lowering the activation energy needed
4.) Catalysts
I Think the Answer
is D...Hopes this Helps <span />