Please help i am giving away brainiliest 1. Which body system is primarily responsible for protecting you against pathogens?

A. Digestive system

B. Nervous system

C. Endocrine system

D. Immune system

No dam links

in a chemical reaction, the atoms and molecules produced by the reaction are called products. no new atoms are created, and no atoms are destroyed. in a chemical reaction, reactants contact each other, bonds between atoms in the reactants are broken, and atoms rearrange and form new bonds to make the products.

it is a limiting nutrient limited by a single nutrient in the ecosystem, & the single goes very slow.