. This type of monitoring tracks all the living things in an ecosystem what the name of this if you dont know dont answer

The transport tubes for food coming down the plants are called?

How is the carbon cycle related to global warming ?

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.