Using the 10% rule when studying trophic pyramids, if the autotrophs produce 100 joules of energy, how much energy is passed on to herbivores?

a. 1 joule
b. 10 joules
c. 0.1 joule

According to the theory of punctuated equilibrium, at what rate does speciation occur? species change depending on the rate of natural selection. after periods of stasis, new species evolve relatively rapidly. species change slowly and eventually form new species. some species change quickly and others change slowly to balance the overall rate.

Environmental science are unconsidered with methods to preserve natural resourcesa. trueb. false

What does polymerase chain reaction (pcr) do? o a. separates dna fragments by size o b. cuts a dna sample into fragments o c. provides an overall picture of a person's chromosomes o d. makes more copies of a sample of dna