Exam 21: Populations Evolve in Ecosystems

What is the term used for the type of pollution that causes a brown or gray haze in sunlight?

Which type of survivorship curve is represented by the letter A here?

Only about 10 percent of the available energy at one trophic level can be transferred to the next trophic level.

In the diagram,which letter is most likely to represent long term carbon storage?

In the aftermath of the Sichuan province earthquake of May 2008,the remaining population might demonstrate _____________ .

Ecologists can easily predict the climax community based on the weather,soil and existing populations.

Introducing new species to an environment is a good way to boost biodiversity.

Carnivores are also called ____________ because they eat herbivores.

An organism's habitat includes where it lives and its role in the community.

The Calvin cycle requires the energy from photons of light to 'fix' carbon.

Humans are most accurately described as:

Which is not included in the measure of biodiversity?

Which term could be filled in for label D?

Where in the diagram has human activity increased carbon content?

If you did not mow and manicure the grass of your back yard lawn,the "weeds" you try to keep out would eventually take over the grass as the dominant population.

Carrying capacity is equal to biotic potential.

Evolution is defined as any change in the frequency of alleles in a population.

Owing to the major loss of energy at each successive trophic level,food chains generally have no more than ___ trophic levels.

The two main types of geochemical cycles are:

Green plants are considered: