What is the major difference between primary and secondary succession? Group of answer choices

Primary succession always occurs before secondary succession.

Secondary succession starts with pioneer species like mosses and lichens.

Primary succession takes place after mature communities are established.

Secondary succession happens in an area that already has soil and organisms.

c.) polymerase chain reaction

- "unlike the original dna fingerprinting method, dna profiling does not use restriction enzymes to cut the dna. instead it uses the polymerase chain reaction (pcr)? to produce many copies of specific str sequences. pcr is an automated procedure that generates lots of copies of a specific sequence of dna."

the answer is: trichonympha lives in the gut of termites and digests cellulose eaten by the termite.

this is an example of a symbiotic association of a protozoan with its mode of association.

hope i

-lavira: )