It’s an abiotic factor because it’s not living.
Answer: C: The total mass of glucose and oxygen formed from photosynthesis is equal to the total mass of carbon dioxide and water used up during the reaction.
Explanation:
According to the law of conservation of mass, mass can neither be created nor be destroyed. Thus the mass of products has to be equal to the mass of reactants. The number of atoms of each element has to be same on reactant and product side. Thus chemical equations are balanced.
Photosynthesis is a phenomenon in which green plants containing chlorophyll use sunlight as a source of energy to convert carbon dioxide and water to form glucose and oxygen.

Answer:
22
Explanation:
Image result for How many neutrons are found in potassium-41?
Potassium-41 is composed of 19 protons, 22 neutrons, and 19 electrons.
Answer:
Energy comes from foods rich in carbohydrate, protein and fat.
Explanation:
The source of energy that is used to power the movement of contraction in working muscles is adenosine triphosphate (ATP), the body's biochemical way to store and transport energy.