Define about the Ecological Pyramids ?

Summarize the main determinants of species richness in a community and relate species richness to community stability.

Give an example of how density-dependent and density-independent factors might interact.

Competition with other species helps determine an organisms (a) ecotone (b) fundamental niche (c) realized niche (d) limiting resource (e) ecosystem

Predation, disease, and competition are examples of _______________ factors. (a) density-dependent (b) density-independent (c) survivorship (d) dispersal (e) semelparous

Describe the age structures in rapidly growing countries, slowly growing countries, and countries with zero population growth.

INTERPRET DATA Study the graph, which shows the combined effects of various factors on biological diversity in 12 different terrestrial and aquatic ecosystems. Which factor is most important overall? Why do you think that climate change and increasing atmospheric CO2 are represented as separate factors? What is nitrogen pollution? Adapted from Sala, O.E., et al., Science, Vol. 287 (2000).

A feeding relationship that proceeds from algae to a fish, then to a fisherman, and then to a shark is _____. a. a food chain b. a food web c. a and b

Describe the mechanisms by which human population growth and resource use causes increased extinction rates.

Describe the competitive exclusion principle and its effects on competing species.