Homework is due for October the 4th. Note that each week I will post the answers to the previous homework questions. You can see them by simply opening up the homework links..the correct answers will be in bold.
Question #1: Which term includes all of the interactions that occur between the organisms and the physical factors in a pond environment?
1) population
2) ecosystem
3) abiotic
4) competition
Question #2: The amount of salt in the air and water of coastal areas determines which species can exist there. In these areas, salt functions as a
1) source of energy
2) biotic factor
3) food source
4) limiting factor
Question #3: In the biosphere, what are some of the major abiotic factors that determine the distribution and types of plant communities?
1) temperature, sunlight, and rainfall
2) humidity, location, and humans
3) soil type, soil bacteria, and soil water
4) insects, carbon dioxide, and nitrogen in the air
Question #4: An earthworm lives and reproduces in the soil. Through its feeding, excretion, and tunneling activities, the worm adds nutrients and allows air to enter the soil. Together, these statements describe the earthworm's
1) habitat
2) nutrition
3) niche
4) environment
Question #5: Predict what would happen to a community if the number of carnivores present suddenly doubled. If the number of carnivores in a community suddenly doubled, the most immedite effect would be a reduction in the number of herbivores that the carnivores feed on. And, if too many herbivores are killed, the producer population would increase even as starvation would soon reduce the predator population. This would eventually lead to a slow recovery back to the point where it all started.
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