Grasslands
a. characterized by heavy rainfall year round

b. characterized by warm temperatures year round

c. found in the interior of continents

d. located only in north american

According to theories of how life began, how did early organic molecules begin to separate from the outside world? a: specialized enzymes were required b: chains of amino acids created a barrier c: formation of microspheres or vesicles d: rna catalyzed the formation of membranes

Which of the following terms describes all of the non-living components of an ecosystem

List do people affect the environment