Which of the following is an interaction in which one organism benefits and the other is harmed (+/-)? parasitism
mutualism
competition
commensalism
please help me

(**i would really appreciate if this was answered soon** ) which pair of quantities includes one quantity that increases as the other decreases during simple harmonic motion?

Carbon 14 is a naturally occurring stable

An architect plans to use solar energy to heat the next house he designs. what principle of absorption and infrared energy can be applied to the design of the new house? how could she apply to those principals?