Question

A plant absorbs 200 J/g of energy from the sun. A cow eats the plant and absorbs 120 J/g of energy. The cow is fed to a group of humans who absorb 70 J/g from the meat. What is the main reason the energy consumption decreases from one consumption to the next? A plant absorbs 200 J/g of energy from the sun. A cow eats the plant and absorbs 120 J/g of energy. The cow is fed to a group of humans who absorb 70 J/g from the meat. What is the main reason the energy consumption decreases from one consumption to the next?

A) Some energy is wasted as heat.
B) The humans use some energy chewing.
C) The plant uses the energy to make sugar.
D) The cow uses some energy to make proteins.

Answer 1

The corrert answer is A.

Answer 2

The correct answer is A. some energy is wasted as heat.

Energy is transferred between organisms through the food in a food chin. Food chain begins with producers. They make food using solar energy. They are eaten by primary consumers which are in turn eaten by secondary consumers and so on. Large amounts of energy are lost from the ecosystem when energy is transferred from one organisms to the next. In biologic systems, large amount of energy is lost as metabolic heat when the organisms are consumed by the next level.