Question

biology lcp 1 25 - 25
ddt released from multiple sources into pacific ocean
phytoplankton
zooplankton
herring
salmon
orcas
what phenomenon explains why the orcas have more ddt in their tissues than the zooplankton?
biogeography
biomagnification
biomass
biotic factors
clear all

Explanation:

Biomagnification is the process by which the concentration of a pollutant (like DDT) increases as it moves up the food - chain. Phytoplankton absorb DDT, zooplankton eat the phytoplankton, herring eat the zooplankton, salmon eat the herring, and orcas eat the salmon. Each step up the food - chain accumulates more DDT, so orcas have more DDT in their tissues than zooplankton.

Answer:

Biomagnification