Scientist have hypothesized the oxygen began to build up in the earths atmosphere after the development of living things with the ability to photosynthesize?
true or false

Which one of these is a involving in both sexual and asexual reproduction

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.

What type of pollution does household garbage cause