During physical changes what happens to the identity of the substance?

What are the two main phases of a cell cycle

The idea of spontaneous generation was disproved by in a experiment involving jars of meat

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.