When using animals in scientific research, it is important that they be treated ethically.
which of the following is an example of animals being treated ethically during an experiment?
a. animals are not allowed to exercise.
b. animals are regularly fed and bathed.
c. all of these

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

Several billion years ago which gas was the least prevailant in the atmosphere

Describe the two types of vascular tissue