The closest star to our solar system is the .

Alpha Centauri
Sun
Northern Star

Use the drop-down menu to match the following definitions to the corresponding terms. the total variety of organisms that live in the biosphere a group of organisms that breed and produce offspring that can breed all of the biotic and abiotic factors in an area

Cell specialization occurs by the process ofa. reproductionb. differentiationc. maturationd. growth

Which list is in order from simplest to most complex? a bacteria - virus - plant - protist b protist - bacteria - virus - plant c virus - bacteria - plant - protist d virus - bacteria - protist - plant