Which of the following about abiotic factors in ecosystems is true?
a. abiotic factors in healthy ecosystems are not in balance.
b. abiotic factors are located in the soil of ecosystems only.
c. abiotic factors are part of a dynamic system.
d. abiotic factors in ecosystems are used up by the living components.

How can you approximate the number of calories required to keep you in energy balance?

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

Which describes a grizzly bear’s habitat?