Which one of the following interspecies relationships has a negative effect on both species?
a. predation
b. competition
c. commensalism
d. parasitism

Aflashlight produces light using energy from the batteries. in which order does the energy change form? a. from chemical to electric to light energy b. from electric to light to chemical energy c. from electric to chemical to light energy d. from light to electric to chemical energy

How many types of rock can form from the rock cycle

Ascientist is conducting an investigation that involves water, silver, carbon dioxide, and oxygen gas which group of statements best describes all of the materials he is using in the investigation?