Which option identifies what has occurred in the following scenario? Ten years ago, Allie walked through a beautiful country forest filled with plants and animals. She decided to take a trip
to this forest again, only to find a bare field with no plant or animal life.
O conservation
pollution
O desertification
respiration

Which zone within the open-ocean zone is home to the most organisms? deep zone surface zone intertidal zone transition zone

16. which of the following accurately describes a step within transcription? a. dna polymerase uses one strand of rna as a template to put together nucleotides. b. the dna strand is used as a template for which a complementary rna strand can be produced. c. the rna strand forms a template by which dna can be built. d. the rna strand is produced within the cytoplasm.

Which of the following factors would not contribute to allopatric speciation? a) a population becomes geographically isolated from the parent population.b) the separated population is small, and genetic drift occurs.c) the isolated population is exposed to different selection pressures than the ancestral population.d) different mutations begin to distinguish the gene pools of the separated populations.e) gene flow between the two populations is extensive.