Question

1. describe two reasons why a species might not be able to expand its range. 3. apply which is an example of a density - dependent factor? (highlight your answer.) a. frost that destroys tomato plants b. fungus that spreads from plant to plant 5. name four factors that influence a populations growth rate. 6. calculate the increase in the mouse population between months 23 and 25. 7. identify for the population represented on the graph, what is the maximum number of individuals that the environment can support over a long time period? 1. explain the factors that have contributed to an increase in the survival rate of the human population. how have these factors contributed to the homeostasis of the population within its environment? explain.

Explanation:

1. Reasons for species range - limitation could include competition for resources and predation. A density - dependent factor example is a pest like the tomato hornworm that destroys tomato plants. Fungi that spread from plant to plant can be plant - pathogens such as powdery mildew. Factors influencing population growth rate include food availability, predation rate, disease prevalence, and space availability. To calculate population increase between months, subtract the initial population from the final population. Identifying the maximum number of individuals an environment can support over time is about determining the carrying capacity. Factors contributing to human population survival rate homeostasis can be medical advancements and stable food supply.

Answer:

1. Competition for resources, predation.
2. a. Tomato hornworm. b. Powdery mildew.
3. Food availability, predation rate, disease prevalence, space availability.
4. (Final mouse population - Initial mouse population).
5. Carrying capacity.
6. Medical advancements, stable food supply.