Why is photosynthesis essential for plant homeostasis?

Group of answer choices

.To color leaves green
.To make food for the plant
.To remove carbon dioxide from leaves
.To make new types of cells

What is the ph of a solution that has a hydrogen ion concentration of 1.0 * 10 -9 m?

Acertain atom has 22 protons and 19 electrons. this atom loses an electron. the net charge on the atom is now 4+1+01-4-. if this same atom with 22 protons and 19 electrons were to gain 3 electrons, the net charge on the atom would be 3+2+02-3-.

Which element has the largest atomic radius? a. asb. nc. pd. sb