Scientists know that carbon dioxide is a greenhouse gas and therefore it traps heat in the atmosphere. So, why do people look at data like the two graphs that you made and propose that humans should
reduce the amount of carbon dioxide they put in the air and do things to reduce the concentration of
atmospheric CO2?

What is the main function of the central vacuole in a plant cell? a. absorbs energy from the sun to produce food b. holds water and maintains turgor pressure c. breaks down molecules to release energy d. contains the cell's genetic material

What do isotopes of uranium have the same number of? what do they have a different number of? a) same number of protons; different number of electrons b) same number of protons; different number of neutrons c) same number of electrons; different number of protons d) same number of neutrons; different number of protons

The same agricultural practices are used in every country of the world. select the best answer from the choices provided t f