The element which is the building block of all living things is (a) oxygen (b) carbon (c) nitrogen (d) phosphorus.

Which prevent errors in dna replication? a. helicase enzyme checks the dna for errors. b. each base can attach to only one other type of base. c. ribosome enzymes prevent errors from happening. d. dna contains no complementary base pairs.

Microorganisms aren’t all decomposers; in fact, many act as producers or primary consumers in an ecosystem. how do microorganisms that act as producers benefit the rest of an ecosystem in terms of energy transfer? what about microorganisms that act as primary consumers?

All individuals have two alleles for a given trait. according to mendel's these alleles are passed down one each from both mother and father.