Which statement describes one event that happens at deep-ocean trenches? Crust is formed. Mountains are formed. Seafloor spreading occurs. Denser plates slide under lighter plates.

Idon’t know the answer and i’ve been stuck on it for a while now skskskskks

How do the sperm cells get from the stigma to the ovules? a. they slide down the petals to the bottom of the flower. b. they travel through pollen tubes. c. they travel along filaments. d. insects carry the sperm cells from the stigma to the ovules.

What are positive impacts of algae? how is it used?