Why is the respiratory system so important?

A) it controls breathing and gas exchange in the body.

B) it controls heartbeat and blood circulation

C) it controls digestion and absorption of nutrients

D)it controls internal body temperature

According to the loco mass the mass of reactants and products

What can be said about farmers in highly developed countries? a) they have little or no negative impact on the environment. b) they practice subsistence agriculture. c) they are able to incorporate polyculture into their farming practices. d) they utilize organic farming techniques on a regular basis. e) they rely on large amounts of energy from fossil fuels.

About how many years does it take for one cycle of surface water to become deep water and then surface water again in the oceans? 101001,000