When organic matter in soil decomposes, it creates a layer called

Which of the follow describes a disadvantage secondary sources have compared to primary sources?

Why are carbon dioxide concentrations expected to increase? a carbon dioxide concentrations are expected to increase, because fossil fuel burning is expected to increase b. carbon dioxide concentrations are expected to increase, because of an increase in agriculture. c.carbon dioxide concentrations are expected to increase, because more land will have to be cleared for increasing populations and agricultural use. d. all of the above select the best answer from the choices provided mark this and return save and exit next submit submit

True or false most plants are c3 plants, because they use molecules of carbohydrate known as g3p in their photosynthesis process.