Ecosystem productivity is principally limited by a. sunlight and nutrient availability
b. water and nutrient availability
C. the availability of time and nutrients
d. none of the above
Please select the best answer from the choices provided
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Which properties describe all matter?

What best describes the structure of the declaration of independence?

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