Ava’s mother is an engineer. Ava was curious about the ways technology or engineering might be able to reduce the amount of carbon in the air. Which of the following is an engineering process that would reduce carbon in the air? A. Increase the use of current alternative energy sources.
B. Develop cooperation with other governments.
C. Reduce the use of fossil fuels.
D. Filter carbon and store it underground.
help!!!

Which could be a pathway of food through an ecosystem

The eruption of a nearby volcano causes a prairie ecosystem to receive a lot less sunlight. which of these is most likely effect on the ecosystem?

Which of the following matches the organisms described with the correct domain? a. archaea--multicellular, eukaryotic organisms that do not have cell walls b. eukarya--single-celled and multicellular organisms, with a defined nucleus and a variety of nutritional sources c. bacteria--unicellular, eukaryotic organisms with cell walls that do not contain peptidoglycan d. bacteria--unicellular, eukaryotic organisms that always lack cell walls