How do scientists collect environmental DNA (EDNA) from carp in the waterways?
A. They filter water samples to isolate DNA from waste and tissue
left behind by carp.
B. They capture carp and extract DNA directly from the fishes'
tissues.
C. They collect waste and tissue directly from carp and extract DNA
from it.
D. They collect carp eggs, from which they extract the fishes' DNA.

In which direction is the pacific plate moving in relation to the north american plate?

1. variations in a population of moths allow for some of its members to be able to adapt to environmental changes. the better adapted of the moths will be able to survive the change and thus prevail as the “fittest” of the species. (a) describe three mechanisms in which variation can occur within a species population. (b) explain which mechanism or mechanisms would be responsible for the survival of a population of peppered moths better than white moths in an environment affected by industrial soot. justify your answer.

How does upwelling affect coastal fisheries? upwelling damages nutrient supplies at coastal fisheries as the warm, nutrient-rich surface water is replaced by nutrient-poor, cold water. upwelling damages nutrient supplies at coastal fisheries as the cold, nutrient-rich surface water is replaced by nutrient-poor, warm water. upwelling improves the nutrient supply at coastal fisheries as the warm, nutrient-rich surface water replaces the nutrient-poor, cold water. upwelling improves the nutrient supply at coastal fisheries as cold, nutrient-rich water replaces the warm, nutrient-poor surface water.