HomeWork # 3: COMPLETE PAGES 98-102; questions 1-9

Homework #4:  COMPLETE PAGES 102-106; questions 10-27

Homework #5: Read 107-108; questions 28-39 - Monday (4-27)

Homework #6: Read 110-111; questions 40-45 - Tuesday (4-28)

Homework #7: Read 112-113; questions 46-59 - Wednesday (4-29)

Homework #8 - Analyze the 5 biochemical cycles embedded within

and provide a summary in your words as what is taking place within each cycle. 

This is DUE SUNDAY @ 8pm

Topic Overview

Life is dependent upon availability of an energy source and raw materials that are used in the basic enzyme-controlled biochemical processes of living organisms. These biochemical processes occur within a narrow range of conditions. Because organisms are continually exposed to changes in their external and internal environments, they must continually monitor and respond to these changes. Responses to change can range in complexity from simple activation of a cell chemical process to elaborate learned behavior. The result of these responses is called homeostasis, a “dynamic equilibrium “or “steady state” which keeps the internal environment within certain limits. Organisms have a diversity of homeostatic feedback mechanisms that detect deviations from the normal state and take corrective actions to return their systems to the normal range. These mechanisms maintain the physical and chemical aspects of the internal environment within narrow limits that are favorable for cell activities. Failure of these control mechanisms can result in disease or even death. 

Google Classroom Code: rdmro2w

8th Grade Living Environment

Meeting Time: 11:00 - 12:00 

Meeting Time: 11:00 am - 12 Noon

Join Zoom Meeting


Meeting ID: 664 915 8919

Password: 188555

During the Ecology unit the 8th grade will be working towards answering their essential question "Why doesn’t any one type of living thing take over the world?


During this unit, the following will be covered:

The fundamental concept of ecology is that living organisms interact with and are dependent on their environment and each other. These interactions result in a flow of energy and a cycling of materials that are essential for life. Competition can occur between members of different species for an ecological niche. Competition can also occur within species. Competition may be for abiotic resources, such as space, water, air, and shelter, and for biotic resources, such as food and mates. Students should be familiar with the concept of food chains and webs.​​

Type your paragraph here.