what is a food web?
a way of tracing the energy loss in an ecosystem
all the trophic levels in an ecosystem, in random order
a series of interconnected food chains
a system for illustrating the individual organisms in an ecosystem

Which describes a difference between cephalopods and gastropods? cephalopods have a water vascular system, and gastropods have an open circulatory system. cephalopods live only in ocean environments, and gastropods live in a variety of environments. cephalopods have a simple nervous system, and gastropods have a complex nervous system. cephalopods are the largest group of mollusks, and gastropods are the smallest group of mollusks.

What is the difference between the type of smog experiences by cities in the eastern united states and that found in southern california?

"he has no children. all my pretty ones? did you say all? o hell-kite! all? what, all my pretty chickens and their dam at one fell swoop? "