Where most of the greenhouse is done

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.

Is there any species that went extinct in recent years due to natural causes (not caused by human interaction). if so, what caused it?

What is responsible for the uneven heating between the poles and the equator on any given day