Worksheet and Answer Key Objectives: Identify changes in ecosystems and their causes. Predict how changes in an ecosystem can affect the organisms in the ecosystem. Define and identify examples of succession. Explain the difference between primary and secondary succession. Identify and describe characteristics of a healthy ecosystem.

Science Quiz This is an Executive file (.exe) You can choose your language " English or Arabic "

This video tries to find answers to some questions: Are we destroying our environment? What is an ecosystem? What are some human activities that destroy the environment? What is poaching? How does poaching affect the environment? Which organisms does it hurt?

Habitat and Niches "worksheet"

Water Cycle " Worksheet"

Weathering " worksheet"

Slow and Rapid Changes " Worksheet"

Forms of Energy " Matching worksheet"

Interesting video. It is short " 4 minutes", but it would be nice for an intro activity or explanation to get students attention. Enjoy graphics and sound effects with Advanced Cinema.

Online quiz Please Visit http://www.abubakrshalaby.com/quiz2015/1/quiz.html Baseline Test for Grades 7 and 8 Your students will receive complete report in their emails This report shows " user' response " and " correct answer"