2. Which systems (2) are directly involved in the digestions (mechanical and chemical) of food?
3.
Which systems (2) control responses to internal and external environments?

Plz ! for many generations farmers in north america have been choosing to cross corn plants with large ears of corn each year this results in the new generation of plants also growing large ears of corn. what is the technique called? a. selective breeding. b. natural selection. c. mitosis. d. asexual budding.

Which coal field location is related to coal fields in the eastern united states and supports the theory of continental drift? eastern india southern africa western australia northern south america

Which factor affects the force of gravity between objects? check all that apply. direction distance mass shape time