Answer:
1. Two individuals in the same species may not be in the same population if they are geographically isolated from each other or are separated by other physical or behavioral barriers. For example, two individuals may belong to different populations if they live on opposite sides of a mountain range or if they have different mating behaviors.
2. The capture-mark-and-release method is a technique used to study animal populations. It involves capturing a sample of individuals from a population, marking them in some way (such as with a tag or dye), and then releasing them back into the population. The marked individuals can then be monitored over time to track changes in the population size and distribution.
3. A population's biotic potential refers to its maximum reproductive capacity, or the maximum rate at which a population can increase in size under ideal conditions. This is typically determined by factors such as the availability of resources, the presence of predators or competitors, and the genetics of the population.
4. The struggle in a community for the same resources is called competition. This can occur between individuals of the same species (intraspecific competition) or between individuals of different species (interspecific competition).
5. Limiting factors that can determine carrying capacity include resources such as food, water, and habitat space, as well as environmental factors such as temperature and pollution. Other limiting factors can include predation, disease, and competition.
6. When a population reaches carrying capacity, its growth slows or stops. This occurs because the population has reached the maximum number of individuals that can be supported by the available resources and environmental conditions.