Organisms are often classified by the relationships they have with other organisms in an ecosystem. A relationship in which both organisms benefit, such as the relationship that exists between the clownfish and anemone, is known as .

parasitism

commensalism

mechanism

mutualism

Astudent wants to test the hypothesis that fertilizer improves the growth rate of grass seeds. to test this hypothesis, the student put the same amount of grass seed in 3 containers with the same type of soil. the student measured the growth at the end of the week. all plants received equal amounts of water and sunlight. if you were asked to graph this data, what would you place on the x-axis? a. fertilizer b. water c. plant growth d. week one