1. normally, healthy populations produce graphs that are pyramidal in shape. what do
you think caused the base of this pyramid to "shrink"?

Answer and Explanation:

The progressive loss of energy at each trophic level puts a natural limit on the total biomass that can exist at each successive trophic level. In a stable ecosystem, the biomass in any trophic level should be more than the successive level in order for it to support the successive levels.

a adaptation is when organism changes itself to fit the environment

ex. when its cold outside i wear a jacket

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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."