If a pollutant, like DDT, is eaten by zooplankton in the sea, that are then consumed by small fish, that are consumed by larger fish, that are consumed by eagles. This causes the concentration of DDT in the blood of these animals to get higher as you work our way up the food chain. This is an example of:

Platyhelminthes have an incomplete digestive system. What is the main structure of their digestive system?

What kind of animals are in Phylum Cnidaria?

turtles in ponds(1).png Which pond has the higher relative abundance?

Which of these is NOT one of the conservation ethics?

population pyramid.png Given this population pyramid, what is NOT true about this population?

Why are changes in the global carbon cycle important?

Which of these conservation ecologists would most likely have agreed with the Bureau of Land Management’s recent decision to cut off all human access to a few large sections of desert lands?

Which term refers to a community of organisms and their interactions with the physical environment in which they live?

What impact does sea level rise have on coastal nesting birds?