The eel is an example of a fish that is suited to both fresh water and sea water. Which zone of an estuary would you expect to find eels in abundance? a. euhaline
b. polyhaline
c. mesohaline
d. oligohaline

What is involved in redox reactions

The eruption of a nearby volcano causes a prairie ecosystem to receive a lot less sunlight.which of these is the most likely effect on the ecosystem? a-an increase in biodiversity. b-an increase in immigration to the area. c-a decrease in available water. d-a decrease in plant growth.

Use the drop-down menu to match the following definitions to the corresponding terms. the total variety of organisms that live in the biosphere a group of organisms that breed and produce offspring that can breed all of the biotic and abiotic factors in an area