Identify the trophic levels of the different organisms below by dragging the terms into the appropriate places.

Some mining processes involve removal of large areas of earths surface in the mined region this practice causes severe environmental damage by allowing which natural process to accelerate in the affected areas? a. precipitation b. erosion c. migration d. condensation

Identify the composition of oceanic and continental crystal rocks. in a model of earth’s interior, where would these rocks appear?

Which kind of worm has a closed circulatory system? a planarian b fluke c pinworm d an earthworm