Le Hw4.1.7

The dashed line on the graph represents the carrying capacity of the environment. Carrying capacity refers to the maximum number of individuals of a species that can be supported by the available resources in a particular habitat. In this context, the graph shows how the fish population size fluctuates over time in relation to the carrying capacity. When the population size exceeds the carrying capacity, the population may decline due to limited resources. Conversely, when the population size is below the carrying capacity, there may be room for growth. The dashed line serves as a reference point to understand the relationship between the fish population and its environment.

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The graph shows that the number of insects in the box remained relatively stable after January, indicating that the population reached its carrying capacity. This means that the environment was able to support a maximum number of insects and the population size remained constant. The fact that the population size did not increase or decrease significantly suggests that the resources available (food, water, and shelter) were sufficient to sustain the population.

The correct answer is a plateau-shaped graph. This is because a population that has reached its carrying capacity will experience a stable population size over time. The plateau shape indicates that the population has reached a point where the birth rate equals the death rate, resulting in a constant population size.

Section X on the graph shows a plateau where the population remains relatively stable over time. This suggests that the population has reached its carrying capacity, which is the maximum number of individuals that the environment can support. At carrying capacity, the birth rate is equal to the death rate, resulting in a stable population size.

The size of a mouse population in a natural ecosystem tends to remain relatively constant due to the carrying capacity of the environment. Carrying capacity refers to the maximum number of individuals that a particular environment can support sustainably. As the mouse population approaches the carrying capacity, resources such as food, water, and shelter become limited, which leads to increased competition and a decrease in population growth. This balance helps to regulate the population size and prevent it from exceeding the available resources in the ecosystem.

The carrying capacity for herbivores in a habitat is most directly affected by the availability of autotrophs in the habitat. Autotrophs, such as plants, are the primary producers in an ecosystem and provide the energy and nutrients that herbivores rely on for survival. The abundance and productivity of autotrophs determine the amount of food available for herbivores, which in turn affects their population size and carrying capacity. Without a sufficient supply of autotrophs, herbivores would not have enough resources to support their population, leading to a decrease in their carrying capacity.

The correct answer is "Resources in the environment are limited." This means that the population growth is limited because there are not enough resources available to support the potential size of the population. This could include factors such as limited food, water, shelter, or other essential resources necessary for the population's survival and growth.