Exam 23: Ecology, the Environment, and Us

Crop rotation occurs where different types of plants are grown on the land each season.If you had no access to chemical fertilizers,which of the following would be best to include in your rotation cycle?

Which of these options would be the most efficient human food source?

________ describes the number of individuals at each trophic level multiplied by their dry weight.

Predict the result when a phosphate-containing chemical is released by a factory into a pond.

Match each definition in the first column to the correct term in the second column. -This form of carbon results from cell respiration.

What is mainly responsible for the loss of biodiversity globally?

A visitor to a tropical American forest will probably never get to see a jaguar,the largest native cat species in the Americas,but will see many plant-eating monkeys.Use your knowledge of energy pyramids to explain the rarity of the predatory cats.

The study of the interactions among organisms and between organisms and the environment is called ________.

The progression of species that would take place in an abandoned field is called ________.

The recent increase in atmospheric carbon dioxide has produced ________,according to the textbook and most scientists.

A developer plans to chop down several healthy trees on her property,burn them,and put a huge concrete pad in their place.Why are these activities environmentally unwise?

Why is the total biomass of secondary consumers normally less than that of primary consumers?

The ________ cycle lacks an atmospheric component.

The biosphere consists of many ________,each consisting of the organisms in a specific geographic area and their physical environment.

A plot of water-soaked soil will have less of the form of nitrogen known as ________ than dry soil.

The shaggy-mane mushroom lives beneath broadleaf forest trees and aids in decomposition of forest litter.You have just learned something about what specific type of ecological information concerning this fungus?

A certain species of tiny wasp lays its eggs within the bodies of caterpillars,whereupon the larvae of the wasp consume the 10-gram caterpillar.Assuming that the entire victim was consumed,what would be the total mass of the eventual adult wasps that emerge from the caterpillar?

The volcanic island Selkirk arose from the North Atlantic off Iceland in 1948.The first organisms to start living there are said to be ________.

A coyote eats a variety of animals and even consumes a little plant matter,so it would be best characterized as ________.

A certain species of flea only drinks the blood of elephants.How would you best describe this flea's trophic level?