Which of the following statements below are TRUE about Keystone Species? Pick all that are correct 1.If keystone species are removed, it can destroy the balance of the ecosystem
2.There can be more than one keystone species within an ecosystem.
3.Keystone species have very little importance to the balance of an ecosystem.

4.One example of keystone species in the ecosystems stem case food web are
bees because they pollinate the plants.

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."

unicellular organisms, like bacteria, are able to perform all life functions within one single cell. multicellular organisms need many different types of cells to carry out the same life processes. each of these special types of cells has a different structure that it perform a specific function.