Which evidence suggests that earth's current warming trends are different from earth's natural climate cycle?

What is responsible for the uneven heating between the poles and the equator on any given day

Substances that can pass through cell membranes by diffusion include a. na ions. b. proteins c. glucose. d. oxygen.

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.