Author Question: POPs such as dioxins and PCB's are transported into arctic ecosystems and food chains by A) ... (Read 70 times)

123654777 · **on:** Jul 16, 2018

POPs such as dioxins and PCB's are transported into arctic ecosystems and food chains by

A) global air patterns and then deposited on snow from where they enter streams and plankton.
B) being eaten by fish when toxic materials are dumped into oceans.
C) local industries run by native people who use toxic chemical processes.
D) ocean currents, which contaminate local streams.

Question 2

In Costa Rica, a heavy downpour provides water that quickly evaporates or is absorbed and released by the dense vegetation of the tropical rain forest. This is an example of a cycle using

A) condensation, evaporation, transpiration, and green water.
B) condensation, precipitation, and gravitational water.
C) evaporation, gravitational flow, and adiabatic cooling.
D) precipitation, gravitational flow, and convection.