True or false? ? the extinction of a species affects other species, including humans. explain your answer..

How can scientists test their ideas about the origin of the universe if they can't physically interact with or study?

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.

What element is able to combine with itself and hydrogen to form large molecules ?