The Living Earth Review

Front

What is the greenhouse effect?

Back

The greenhouse effect is the warming of the atmosphere caused by the trapping of heat that is radiated from the Earth's surface, preventing it from escaping into space.

Front

Which system protects the body from water loss and the outside environment?

Back

The integumentary system protects the body from water loss and external environmental factors. It includes the skin, hair, and nails.

Front

What is a density-dependent limiting factor?

Back

A density-dependent limiting factor is a factor whose effects on the size or growth of a population vary with the population density, such as disease.

Front

What might increase the carrying capacity of an ecosystem?

Back

An increase in resources, such as food and water, can lead to an increase in the carrying capacity of an ecosystem.

Front

Which process adds carbon dioxide (CO2) to the atmosphere?

Back

Burning fossil fuels, cooking with gas, and burning wood all add CO2 to the atmosphere, while planting trees helps to reduce it.

Front

What is the role of the respiratory system?

Back

The respiratory system is responsible for the exchange of gases, primarily oxygen and carbon dioxide, between the body and the environment.

Front

Define ecosystem.

Back

An ecosystem is a community of living organisms interacting with their physical environment, including both biotic and abiotic components.

Front

What is a limiting factor in an ecosystem?

Back

A limiting factor is a resource or condition that limits the growth, abundance, or distribution of an organism or a population within an ecosystem.

Front

What is the difference between biotic and abiotic factors?

Back

Biotic factors are living components of an ecosystem (like plants and animals), while abiotic factors are non-living components (like water, sunlight, and temperature).

Front

What is photosynthesis?

Back

Photosynthesis is the process by which green plants and some other organisms use sunlight to synthesize foods with the help of chlorophyll, converting carbon dioxide and water into glucose and oxygen.