U8_Ecosystems & Biomes Notes

Multiple Choice

What are ecosystems composed of?

• Only living things

• Both living and nonliving things

• Only nonliving things

• Only plants and animals

Multiple Choice

Which of the following is NOT included in an ecosystem?

• Sunlight

• Buildings

• Soil

• Water

Multiple Choice

What are abiotic factors in an ecosystem?

• Fallen trees, plants, fungi

• Water, light, temperature, atmosphere, and soil

• Animals, bacteria, and insects

• Photosynthesis, respiration, and decomposition

Multiple Choice

Which of the following are considered biotic factors in an ecosystem?

• Rocks, rivers, and mountains

• Water, light, and soil

• Fallen trees, other organisms, plants, fungi

• Climate, weather, and humidity

Multiple Choice

Which of the following is a population?

• a group of squirrels, and a group of oak trees in the forest

• a single oak tree
• all the oak trees in a forest
• all the pine trees, mice, and water in a forest

Multiple Choice

Which of the following is a community?

• a group of squirrels, a group of oak trees in the forest

• a single oak tree
• all the oak trees in a forest
• all the pine trees, mice, and water in a forest

Multiple Choice

What defines a biome?

• A single ecosystem

• A community of people

• An area that contains ecosystems with similar biotic and abiotic features

• A collection of different species living in separate areas

Multiple Choice

What is the definition of Carrying Capacity in an ecosystem?

• The smallest number of individuals of one species that an environment can support.

• The maximum capacity of organisms under perfect conditions with no limiting factors.

• The largest number of individuals of one species that an environment can support.

• When a population's size grows beyond the ability of the area to support it.

Multiple Choice

What does Biotic Potential refer to?

• The rate at which a species uses resources.

• The maximum capacity of organisms under perfect conditions with no limiting factors.

• The number of offspring an organism can produce in its lifetime.

• The ability of an ecosystem to recycle nutrients.

Multiple Choice

What is Overpopulation in the context of an ecosystem?

• The introduction of a new species into an environment.

• The balance between predators and prey in a habitat.

• The largest number of individuals of one species that an environment can support.

• When a population's size grows beyond the ability of the area to support it.

Multiple Choice

Which of the following is NOT an example of a limiting factor?

• Food

• Shelter

• Unlimited space

• Disease

Multiple Choice

What happens when there are not enough resources for a population?

• All individuals thrive and the population grows exponentially

• Some individuals cannot survive

• The population size remains constant

• New resources are created spontaneously

Multiple Choice

What can cause changes in the environment?

• Only natural processes

• Only human action

• Both natural processes and human action

• Neither natural processes nor human action