Download Human Impact on Earth Study Guide

Human Impact on Earth Study Guide
1. Things (fossil fuekls, minerals, metals) that we get from nature are called __________ resources
2. Resources that can be replenished at the same rate in which they are used are called __________
resources
3. Resources that are used faster than they can be replaced are called ______________ resources
4. The variety of life in an ecosystem is called it’s _____________
5. As you move toward the equator, biodiversity tends to __________ as the climate becomes warmer and
moister
6. True or false – a tropical country may have more bird species as the United States and Canada combined.
7. Some reasons that biodiversity is important to people are that it provides food, _________ and many
products.
8. Which ecosystem is healthier – one with more or one with less biodiversity?
9. Factors affecting biodiversity include less area for organisms to live (__________ ________),
____________ species that move into an ecosystem as a result of human actions, and ____________,
which is the removal of fish from an area faster than they can renew.
10. A(n) __________ species is one that was once present on Earth but has died out.
11. A(n) __________ is one in danger of becoming extinct
12. A(n) __________ is one likely to become endangered in the near future
13. Two endangered species in Florida are ________________ and ________________
14. The use of __________ energy sources, such as solar power, can also reduce carbon dioxide emissions.
15. Loss of soil __________ means that the useful nutrients have been used up
16. Whenever vegetation is removed from an area, soil is exposed and __________ can occur
17. Four solutions to erosion include no-till farming, __________ __________, or tilling rows across hills
and valleys instead of up and down, planting trees in rows along fields to reduce soli erosion by
__________, and planting ________ crops which are not harvested.
18. ____________ is the clearing of forested land for agriculture, grazing, development, or logging
19. Trees take in __________ __________, so their removal impacts global greenhouse gas levels.
20. ____________ turning an area into a desert due to overuse of water elsewhere or cutting down all
vegetation, or overgrazing by cattle
21. ____________ is paving land reduces habitat and prevents water from soaking into the soil.
22. ____________ is increasing the population beyond an ecosystem’s carrying capacity
23. Do people in developed nations or developing nations use more resources?
24. A(n) __________ __________ is an area where each day's garbage is deposited and covered to prevent
contamination and odor.
25. __________ wastes are those that are poisonous, that cause cancer, or that can catch fire are called
hazardous
26. A ____________ source of pollution enters water from a specific location, such as drainpipes or ditches,
while a ____________ source enters a body of water from a large area, such as lawns, construction sites,
and roads
27. The largest source of water pollution in the United States is __________, which is loose material, such
as rock fragments and mineral grains, that is moved by erosion.
28. When farmers and home owners apply ____________, which are substances that destroy pests, to keep
insects and weeds from destroying their crops and lawns, some of the chemicals run off into water.
29. Fertilizer runoff can cause and ________ bloom to occur in ponds, lakes or the ocean
30. When you flush a toilet or take a shower, the water that goes into drains, called __________, contains
human waste, household detergents, and soaps.
31. Where does sewage from Miami-Dade Water and Sewer end up?
32. Oil and gasoline may enter water through __________ from roads and parking lots when it rains, from
leaking tanks at gas stations, from leaks in underground __________, and from accidents at oil drilling
platforms and wrecks of oil-transporting ships
33. How does heated water produced by a factory or power plant affect oxygen levels?
34. The __________ __________ Control Act, amended in 1972, requires ____________ to remove or treat
pollution in water discharged to a lake or stream.
35. The ________ ________ Act of 1996, strengthens health standards for drinking water.
36. Five forms of air pollution are production of ________ ________ from burning fossil fuels, production
of ______ ______, which can injure or kill aquatic organisms and trees, ______ depletion (a layer in the
stratosphere which helps protect us against sunburn), ____________, or tiny particles of solid or liquid
suspended in a gas (aerosol) which can impact heart disease, altered lung function and lung cancer; and
VOCs, which contribute to global warming and may cause cancer on long exposure.
37. A sixth form of air pollution is __________ release, such as the leak that killed over 3000 people in
Bhopal, India in 1984.
38. The ________ ________ Act of 1970 is the comprehensive federal law that regulates air emissions from
stationary and mobile sources.