March 13, 2012
Section A: Answer the following questions in complete sentences.
Define biosphere. According to Dictionary.com the definition for biosphere is as follows: the part of the earth’s crust, waters, and atmosphere that supports life and definition number two is the ecosystem comprising the earth and the living organisms that inhabit it.
Describe the part of the biosphere where humans can survive. Humans can survive in any area that provides food, water and clean air. The biosphere must maintain a stable atmosphere and climate as well as protect humans from solar radiation.
Based on this week’s required readings, what are the main causes of threats to the biosphere?
Global warming Water shortage Loss of usable land Pollution
Over population Social ills Pandemics Melting of polar ice caps
Rising sea levels Extinction of species
Define sustainability. According to Dictionary.com the definition for sustainability is as follows: the ability to be sustained, supported, upheld, or confirmed. The environmental science definition is, the quality of not being harmful to the environment or depleting natural resources, and thereby supporting long-term ecological balance.
What do scientists predict will happen in Earth’s future if we do not increase our sustainability practices?
The Earth’s climate is complex and always changing. As the polar ice caps melt and the globe warms everything as we know it will change. As the weather shifts so will the winds, causing our crops to grow differently and not as abundantly as before. As the population increases the food sources will decrease. Over population will cause crops as well as water to no longer be plentiful. With each threat the chance of extinction of animals, crops and ultimately man exists.
Section B: Fill in the chart with complete sentences.
For each item listed below, identify one related...