Match the following. 1. defends your body from any organisms that threaten the destruction of cells epidermis 2. white blood cells that produce antibodies immune system 3. system of vessels that are responsible for the removal of bacteria from the bloodstream lymphatic system 4. outer layer of the skin which, along with other functions, makes the body waterproof lymphocytes 5. inner layer of skin which contains blood vessels, sweat glands, hair follicles, and nerve cells dermis

answer; the correct answer is conflict- related aggression; +

energy and particles

the answer is lactic acid from anaerobic respiration. the acid in lactic acid is what creates sore and burning muscles. if you think about how acid burns that will give you a clue for questions like this.

the nitrogen cycle provides nitrogen to the ecosystem from the atmosphere, ground and oceans. nitrogen is an important component of complex molecules such as amino acids and nucleotides, which lead to the creation of proteins and dna, the building blocks of all life. plants absorb nitrogen in the form of ammonium, nitrate ion and, on rare occasions, as amino acids. animals receive nitrogen necessary for biological processes from feeding on living or dead organic matter.