Is fog conditioning and what is it mad of

Why do we perceive objects as retaining their brightness under different lighting levels?

Nh3 +02-no + h20 is unbalanced what is the balanced equation

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.