injecting a person with a killed-bacteria vaccine can protect that individual from a disease because the proteins of the killed bacteria

Which class of molecules contains the amino group, nh2 (a) sugars (b) water (c) proteins (d) hydrocarbons

Microorganisms are involved in each of the following processes excepta. smog production. b. food production. c. infection. d. o2 production. e. decomposition of organic material.

An easy way to calculate the amount of energy available at each level is to what?