Was ellesmere island hotter and colder 50,000,000 years old What is the evidence?

Which of the following typically characterizes a tropical rainforests

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

To determine if a particular plant is homozygous or heterozygous, you would have to test cross with a