1. .What are 3 basic population growth curve? When might you see them in nature?

The three basic growth curves are constant exponential, and logistic growth. Exponential growth can be found in nature when a current population multiply. Logistic growth is found in nature when the population grows. Constant growth is having the population stay the same.

2. Define biotic potential and environmental resistance, and give factors of each. What generally remains constant, and which

Biotic potential is the ability of populations to increase.
Reproductive strategies are a factor to biotic potential. Other factors include ability of animals to migrate, adapt, invade, and defense mechanism, and resistance to adverse conditions and disease.
Environmental resistance is the combination of all the biotic and abiotic factors that limit a population's increase.
Biotic potential generally remains constant while environmental resistance controls population's size.

3. Differentiate between the terms critical number and carrying capacity. What is density dependence?

Critical number is minimum population base and carrying capacity is the maximum population of a species that a given habitat can support without the habitat being degraded over the long term.
Density dependence is as population density increases, environmental resistance becomes more intense and causes such an increase in mortality that population growth ceases or declines.

4. Explain the difference between r- and K-strategists. Where do these terms come from, and what are the characteristics of each broad category?

R-strategists produce massive numbers of young, but then leave survival to the whims of nature. Animals have rapid reproduction, rapid movement, and often short life span.
K-strategists have a much lower reproductive rate but then care for and protect the young until they can compete for resources with adult members of the population.

5. Describe the predator-prey relationship between the moose and wolves of Isle Royale. What other factors influence these two populations?

A rise in the moose population is followed by a rise in the wolf population, followed by a decline in the moose population and then a decline in the wolf population. Other factors such as parasites, weather and disease also influence these populations.

6. Distinguish intraspecific and interspecific competition. How do they affect species as a form of environmental resistance?

Interspecific occurs when species may compete for some scarce resource.
Intraspecific is when some species will get what they need, and some won't. Competition is a form of bottom-up regulation because it occurs only when a resource is in limited supply.

7. What is meant by territoriality, and how does it limit the effects of competition in nature?

Territoriality refers to individuals defending a territory against the encroachment of others of the same species. It can lead to the death of a pack when confrontation occurs among two packs.

8. What problems arise when a species is introduced from a foreign ecosystem? Why do these problems occur?

One problem can be the reduction of other species. Disease can spread from the foreign specie causing valuable species to die. Pests can also come from foreign species.

9. What are selective pressures, and how do they relate to natural selection?

Selective pressure occurs when most young plants and animals in nature do not survive and all victims to various environmental factors such as predators, parasites, drought and other. Natural selection is a modification of specie's gene pool toward features that enhance survival and reproduction within the existing biotic community and environment.

10. Describe several types of adaptations a species might have that would allow it to survive in a dry environment, escape predation, or lower competition with another species.

Adaptations for coping with climatic and other abiotic factors. Adaptations for obtaining food and water. Adaptations for escaping from or protecting against predation and for resistance to disease-causing or parasitic organisms.