Test your knowledge and see how you score!
1. Which of the following causes more carbon dioxide air pollution per year?
car
home
2. What is the most common reason that animals become extinct?
pollution
Their habitats are destroyed by people.
overhunting
global warming
3. The ________ is a community of living plants and animals interacting with their nonliving environment.
biology
food web
ecosystem
population
4. How is most electricity generated in the U.S?
with solar power
by burning fossil fuels like oil and coal
from water with hydroelectric power plants
through nuclear energy
5. Most garbage in the U.S. ends up in:
oceans
incinerators
recycling centers
landfills
6. Planting more plants and trees can reduce carbon dioxide levels in the air.
True
False
7. The variety of life on Earth, reflected in the variety of ecosystems and species, their processes and interactions, and the genetic variation within and among species is known as:
ecology
eco-variety
biodiversity
muliplicity
8. The current population of the Earth is over 6 billion.
9. Which of the following is considered household hazardous waste?
plastic
glass
rotten food
batteries
10. What is the most common source of pollution for streams, rivers, and oceans?
chemicals released by factories
garbage dumped by cities
water running off lawns, roads, parking lots, farms and fields
trash washed into the oceans from beaches
