Answer:
reactions
Explanation:
Reactions occur when two reactant molecules effectively collide, each having minimum energy and correct orientation. Reactant concentration, the physical state of the reactants, and surface area, temperature, and the presence of a catalyst are the four main factors that affect reaction rate.
The last option because it's like the earth
By it alleles, and there genes what one plant have the other may not have see it all depends on the out come of the alleles-genes that they come up with .
This shouldd helpp broo .
Cells get energy by breaking down food molecules. The process of breaking down food to restore energy to the cells is called Cellular Respiration.
A rigid cell wall is found in plants so they can hold themselves up.
