Which of the following is an element of custodial management? A. Introducing new species into an ecosystem
B. Being able to control an animal’s environment
C. Using forest management principles in woodlands
D. Repairing any part of the environment destroyed by a natural disaster

Which is an example of a decomposer? a. bear b.algae c.grass d.bacteria d bacteria

Radiometric dating is used to tell the absolute age of materials by studying the decay rate of radioactive isotopes. the decay rates of isotopes are constant and are expressed as .

Based on the observation that only male crickets produce a song, you hypothesize that a male's song is a form of communication to potential mates. you set up a simple experiment to test this hypothesis. in the laboratory, you place a male snowy tree cricket in enclosure a, which is adjacent to enclosureb. in enclosure b, you place other insects, one at a time, and observe their responses to the male's song. the enclosures are designed so that the two insects being tested cannot see or smell each other, but sound is transmitted from enclosure a to enclosureb.