Problem 1
Describe the basic types of ecosystems on Earth.
Problem 2
Explain how the efficiency of energy transfers between trophic levels effects ecosystem.
Problem 3
Describe how organisms acquire energy in a food web and in associated food chains.
Problem 4
Explain how human activities have impacted biogeochemical cycles and the resulting potential consequences for Earth.
Problem 5
Compare grazing and detrital food webs. Why would they both be present in the same ecosystem?
Problem 6
The extremely low precipitation of subtropical desert biomes might lead one to expect fire to be a major disturbance factor; however, fire is more common in the temperate grassland biome than in the subtropical desert biome. Why is this?
Problem 7
In what ways are the subtropical desert and the Arctic tundra similar?
