A large plant that grows in a warm, swampy environment and faces substantial herbivory most likely

Consider a population of birds that land on an island. Their numbers rise exponentially until they reach a population of 1,000 birds, after which they crash to 700 due to resource limitations. Over time, the population rises and falls until it stabilizes around a population of 850. What does this population size likely represent in terms of population growth?

Consider the salmon example from class that followed the flow of nutrients from the marine system to the terrestrial system in the Pacific Northwest. In this example salmon feeding in marine environments redeposited nutrients into a freshwater system.  Why are the salmon important for the trees and trees important for the salmon? (3pts)  

Which of these is true about matter and energy in an ecosystem?

The climate of a certain region is warm to hot, with little seasonal variation in temperature, but with a pronounced dry season. The vegetation is mostly grasses, but there are some shrubs and trees. This region is most likely a

Which of these is true about matter and energy in an ecosystem?

Why do tertiary consumers, such as hawks or lions, often represent the least amount of biomass? (2pt)

Which of the following would likely have the greatest proportion of productivity going into its own respiration?

Nutrient Cycling  C. Resource pulses are occasional events of ephemeral resource superabundance that occur in many ecosystems. Herbivores, like the 17-year periodical cicadas, can have enormous impacts on the growth and reproduction in forest plants. In their immature forms they feed primarily on roots belowground biomass. Is this a top-down or bottom-up cascade? (2pts)  

Why do tertiary consumers, such as hawks or lions, often represent the least amount of biomass? (2pt)