Which ecosystem has the highest density of living things?

Asmall number of finches are removed randomly from the wild and placed in a protected bird area. they are given as much food as they need and have plenty of space. why would natural selection not occur in this population? a. there is no reason for genetic mutation to occur. b. the birds compete for limited resources, c. the population has not reached carrying capacity. d. there is no genetic variation in the finches.

The idea of spontaneous generation was disproved by in a experiment involving jars of meat

Restriction enzymes are used in making recombinant dna. describe the role restriction enzymes perform when constructing recombinant dna.