Chapter 16 Study Guide - Council Rock School District



Chapter 16 Study Guide

Human Impact on Ecosystems

Biology

1. Carrying capacity - amount of people that Earth can support; Earth’s human carrying capacity is unknown

2. Thomas Malthus - Claimed that the human population was growing faster than Earth’s resources could support.

Malthus’ prediction was off because of the advances in technology.

3. smog - sunlight interacts with pollutants in the air produced by fossil fuel

4. Renewable resources - cannot be used up or can replenish themselves over time.

5. ecological footprint - amount of land needed to support a person. Measures use of water, food, shelter, waste, energy, etc.

6. greenhouse effect - slows the release of energy from Earth’s atmosphere, traps heat, Earth would be too cold for life without the greenhouse effect

7. acid rain - caused by fossil fuel emissions

8. ozone - harmful to organisms at ground level, but plays a critical role in protecting Earth’s biosphere from harmful UV rays from the sun.

9. global warming - trend of increasing global temperatures; caused by carbon dioxide gases (changes with natural climate cycles) and methane

10. pH of rain – 5.6

11. frog sensitivity to pollution - Skin is water permeable and direct contact with pollutants can cause deformities such as extra arms and legs, as well as body tumors.

12. Biomagnification - causes accumulation of toxins in the food chain; Top consumers, including humans, are most affected

13. umbrella species - the habitat in which the species lives must be protected

other species are protected because they share the ecosystem

14. clear cutting – cutting down an entire forest

Factors in ecological footprint know some factors used in determining your footprint

.

................
................

In order to avoid copyright disputes, this page is only a partial summary.

Google Online Preview   Download