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Which of the organisms listed below performs nitrogen fixation? a. legumes b. plants c. bacteria d. fungi

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 of the following types of stars are dim but can have high surface temperatures? giants main sequence stars supergiants dwarfs