Answer:
A catalyst
Explanation:
Enzymes are not a catlysy
Answer:
cells make up tissues, which make up organs. organs make up organ systems which make up organisms
Explanation:
<span>Once a month an egg is released from one of the almond shaped organs known as the ovary.</span>
A physical change is basically a body change so like if a crayon is solid then sits in the sun for a long time it melts away that’s a physical change because it changes its physical appearance
