Which is an example of a density-independent factor on a population?
A. amount of prey
B. weather
C. predation
D. intraspecific competition
E. nesting sites
Answer: B
You might also like to view...
If the partial pressure of oxygen outside of a cell is 100 mmHg and the partial pressure of oxygen inside of a cell is 25 mmHg, which of the following statements is correct?
A. There will be a net movement of oxygen from outside the cell to inside the cell. B. There will be a net movement of oxygen from inside the cell to outside the cell. C. There will be no net movement of oxygen in either direction. D. There will be a net movement of carbon dioxide into the cell. E. There will be a net movement of carbon dioxide out of the cell.
True or False: The monogamous prairie vole has evolved further than its promiscuous relative the montane vole
A. true B. false
A(n) ____ is created as ions diffuse across membranes
a. chemical gradient b. electrochemical gradient c. negative gradient d. electrical gradient e. concentration gradient
The principle of independent assortment states that
a. one allele is always dominant to another. b. hereditary units from the male and female parents are blended in the offspring. c. the two hereditary units that influence a certain trait segregate during gamete formation. d. each hereditary unit on one chromosome is inherited separately from hereditary units on other chromosomes. e. genes on the same chromosome travel separately.