1) Label as either Densin -Dependent or Density Independent Factor a. __ -An enormous grassfire burns grass in the Medicine Hat area affecting hers of Pronghom antelope. b. __ - Both Pike and Walleye prey on Perch so they compete for the same food source. c. __ - A massive drought spreads across Southern Alberta affecting Wildlife population. d. __ - How waste water is being poured into a lake causing the overall temperature of the lake water to rise. The aquatic population of insects are adversely affected by this increase in temperature e. __ - Five mice live in a small cage.Fifteen new mice are added to the cage causing crowding. This results in fighting among the mice f. __ - Male Sage Grouse dance to attract females on a traditional dancing around called a lek .Thirty-five grouse have used this lek for many years.This year, however.10 new males join in the dance. g. __ - Insecticides used to control grasshoppers results in a decline in a Several burrowing owls eat grasshoppers. h. __ - The Thrips, a small insect considered a common plant pest feed on crops and house plants. A cooler summer has reduced the reproductive success of thrips in BC , resulting in less damage to crops. i. __ - Global warming is resulting in an overall increase in world

1) Label as either Density-Dependent or Density-Independent Factor<br /><br />a. **Density-Independent:** A grassfire is a natural disaster that affects a population regardless of its size or density.<br /><br />b. **Density-Dependent:** Competition for food becomes more intense as the population density of both predator species (Pike and Walleye) increases.<br /><br />c. **Density-Independent:** Drought affects populations regardless of their density. It's a large-scale environmental factor.<br /><br />d. **Density-Independent:** The pollution affecting the lake's temperature impacts the insects regardless of their population density. The source of the pollution is external to the insect population.<br /><br />e. **Density-Dependent:** Crowding and fighting are direct consequences of increased population density.<br /><br />f. **Density-Dependent:** The increased number of male Sage Grouse increases competition for mates and potentially territory on the lek. This is a density-dependent effect related to mating success.<br /><br />g. **Density-Independent:** The insecticide application affects the grasshoppers (and indirectly the owls) regardless of the grasshopper population's density.<br /><br />h. **Density-Independent:** The cooler summer temperature affects the thrips' reproductive success regardless of their population density.<br /><br />i. **Density-Independent:** Global warming is a large-scale environmental change that affects populations regardless of their density. It's an external factor not influenced by the size of any specific population.<br />