Name the products used as biofuels. Check all that apply

oats

corn

barley

sugar

cow manure

natural gas

vegetable oil

Biofuels can be produced from organic matter, or biomass, such as corn or sugar, vegetable oils or waste feedstocks. As biofuels emit less carbon dioxide (CO2) than conventional fuels they can be blended with existing fuels as an effective way of reducing CO2 emissions in the transport sector.

Explanation:

fluid balance is an aspect of the homeostasis of organisms in which the amount of water in the organism needs to be controlled, via osmoregulation and behavior, such that the concentrations of electrolytes (salts in solution) in the various body fluids are kept within healthy ranges. the core principle of fluid balance is that the amount of water lost from the body must equal the amount of water taken in.

answer; 4% i believe this is correct;