Populations & Biodiversity

Front

What is a density-dependent factor?

Back

A factor that affects population size in relation to the density of the population, such as predation, disease, and competition.

Front

What happens to prey numbers when predator numbers decrease?

Back

Prey numbers increase because fewer of them are being consumed.

Front

What is the effect of excess nutrients on algae growth in a lake?

Back

The algae continue to grow due to excess nutrients, and some of the algae die.

Front

How do toxin concentrations change as you go up the food chain?

Back

Toxin concentrations increase as you go up the food chain.

Front

What is a limiting factor in an ecosystem?

Back

A biotic or abiotic resource that causes population size to decrease.

Front

Define biodiversity.

Back

The variety of life in a particular habitat or ecosystem, including the number of species, genetic diversity, and ecosystem diversity.

Front

What is carrying capacity?

Back

The maximum number of individuals of a species that an environment can support sustainably.

Front

Explain the concept of ecological succession.

Back

The process by which ecosystems change and develop over time, often following a disturbance.

Front

What is the difference between biotic and abiotic factors?

Back

Biotic factors are living components of an ecosystem, while abiotic factors are non-living components.

Front

What role do producers play in an ecosystem?

Back

Producers, such as plants, convert sunlight into energy through photosynthesis, forming the base of the food chain.