Ozone is helpful in the upper atmosphere but harmful in the lower atmosphere where we can breathe it ( True or false)

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

In which state was more than 100 billion tons of coal mined in 2005?

What are the pros and cons of quadrat sampling?