Hello please give answers

Variety of living organisms; includes genetic, species, and ecological types.

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?