Why does the greenhouse gases absorb heat?​

Witch type of microscope is used to view very small cell components like proteins and dna?

Describe how a student should adjust the microscope to see the cells on a slide more clearly?

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.