Enzymes .

a. Biological catalysts (made of protein) that speed up the rate of chemical reactions by activation energy required for a reaction to occur

b. The enzyme has an active site (exposed R groups) where the reaction occurs

d. planting trees

the trees take in carbon to make oxygen.

transformative rocks are the stones that emerge from the transformation of existing rock composes in a procedure called changeability, implies changing of structures. transformative rocks are shaped from alternate shakes that are changing a result of warmth or weight connected. one of this model is the earth developments that making rocks profoundly cover or crushed which will make the stones warmed and put under awesome weight. they are not softening but rather the minerals they are containing are changed synthetically that will shape transformative rocks. now and again different rocks are shaped when the others are near some liquid magma and getting warmed.