A scientist is studying the flow of energy into and out of a rain forest as well as the usage of energy by the organisms that inhabit that area. This study would be at the level of a(n)
A) population.
B) biosphere.
C) community.
D) species.
E) ecosystem.
E
You might also like to view...
The human body requires about ____ of fat
each day to stay healthy.
a. 1 teaspoon b. 4 teaspoons c. 1 tablespoon d. 4 tablespoons e. 1 cup
You discover a green, filamentous multicellular eukaryote growing at the edge of a pond. How could you determine if the organism is a green alga or a plant?
a. Determine if the organism protects and nourishes its embryos. b. Determine if the organism protects its zygotes. c. Examine the cell walls to see if they are composed of cellulose. d. See if the organism stores its excess carbohydrates in the form of starch. e. Test for the presence of chlorophylls
In the 1920s and 1930s, terrible dust storms carried away tons of good soil from farmland in western Oklahoma. Which of the following would be a result?
A) massive immigration B) shortening of the doubling rate C) reduction in carrying capacity D) exponential growth of human population
Proteins in psychrophilic cells generally have ________ than proteins found in cells that grow optimally at higher temperatures
a. fewer ?-helices and more ?-sheets b. fewer hydrogen bonds c. more ?-helices and fewer ?-sheets d. more hydrogen bonds