UNIT 1: Water is Life
Unit 2:
Unit 3:
http://www.groundwater.org/get-informed/groundwater/threats.html
http://eschooltoday.com/pollution/water-pollution/types-of-water-pollution.html
http://www.mbgnet.net/fresh/rivers/shed.htm
https://cfpub.epa.gov/surf/locate/index.cfm
UNIT 4: Adaptations
Chapter 4: http://texasaquaticscience.org/water-aquatic-science-texas/
http://texasaquaticscience.org/adaptation-aquatic-ecosystems/
UNIT 5: From Sun to Sunfish
Invasive Species
UNIT 7: Aquifers and Springs
http://texasaquaticscience.org/aquifers-springs-aquatic-science-texas/