What characteristics does cold medicine have to have that allows it to be transported throughout the body?

What are the four basic classes of organic molecules how do they differ structurally and functionally

Which sentence best describes the relationship between chlorophyll and the chloroplast? a.)chlorophyll is a chemical found in a chloroplast. b.) chloroplast is a chemical found in a chlorophyll. c.) both chlorophyll and chloroplasts are found in animals. d.) both chlorophyll and chloroplasts make carbon dioxide.

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