Generating heat in order to start a reaction uses energy to begin with. Enzymes however reduce the activation energy and can only function (usually) within a narrow temperature range, using less energy. Enzymes are used because they are more efficient.
Clones are not created through egg and sperm, so it is not sexual reproduction, but asexual reproduction.
Answer:
D
Explanation:
Its based on research but shows that it can be at a younger age as well
The correct statement concerning pH is that the pH of a solution increases gradually with increasing basicity.