Unlike an animal's habitat, an animal's niche can be described by all of the following except a. the job the organism has within its environment. b. the place in which the species lives. c. the way the species obtains what it needs to survive. d. the way the species obtains what it needs to reproduce.

Asample of silver (with work function ? = 4.52 ev) is exposed to an ultraviolet light source (? = 200 nm), which results in the ejection of photoelectrons. what changes will be observed if: silver is replaced with copper (? = 5.10 ev) more photoelectrons ejected no photoelectrons are emitted fewer photoelectrons ejected more energetic photoelectrons (on average) less energetic photoelectrons (on average)

Write a net ionic equation to show that hydrofluoric acid, behaves as an acid in water.

Identify and describe the three ways that mutations affect organisms.