Which statement is scientifically based? Mutations rarely occur.
All mutations are harmful.
Some mutations can be contagious, like infections.
O Mutations are not passed from parent to offspring.

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

What chemical speeds up the process of decomposition in dead organisms are exposed to it? nitrogen oxygen hydrogen chlorine

Add solid urea to a beaker of water. the beaker gets very cold. is δh favorable or