Why does ice float on water?
a) the temperature of ice is lower than the temperature of water.
b) the temperature of water and ice are the same.
c) the density of ice is less than the density of water.
d) the density of ice is greater than the density of water.

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.

How does the nervous system affect the excretory system?

Describe the relationship and movement between temperature and density in a convection cell. make sure you identify the direction of travel