unit review ecology

An online crossword puzzle with 20 words. Play it free at AgileCrosswords.com.

Clues

resources that are being extracted and used at a faster rate than they are renewed
examples include water air soil sunlight plants and animals
helps to clean and recycle air
areas of high land that direct water into different watersheds
reduce, reuse and recycle in order to keep from running out of resources
using up resources faster than they can be renewed
when wtaer easily flows through
rock fragments, nutrients,water,air and decaying material
was once from a living thing
a unique ecosystem that forms where a river ends
an important abiotic factor
the level of acidity or alkalinity in a substance
power generated from water
the area in soil that is filled with water
a fire that is purposefully set to help the health of a forest ecosystem
an area of land that is drained by a river and all of its tributaries
water is not able to pass through
microorganisms that break down dead material
oil, coal, and natural gas
depend on the size of the soil particles