Which chemical is produced during vigorous exercise when the supply of oxygen to a muscle is limited or inadequate?

Twind is considered to be an abiotic factor because it.?

Ais a group of individuals of the same that exist together in the same place at the same time

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