Life on Earth

Front

What is the main source of energy for life on Earth?

Back

The sun.

Front

Why is the proximity of the Sun important for life on Earth?

Back

It helps regulate temperature.

Front

What is the habitable zone?

Back

A zone with the correct distance away from the Sun.

Front

If the Earth were any closer to the Sun, how would conditions for life on Earth change?

Back

The conditions would be too hot to support life.

Front

Even though the moon is in the habitable zone, why is there no life present?

Back

All of the above are correct: no liquid water, atmosphere is too thin, exposed to too much solar radiation.

Front

What is photosynthesis?

Back

The process by which green plants use sunlight to synthesize foods with the help of chlorophyll.

Front

What role do producers play in an ecosystem?

Back

Producers, like plants, create energy through photosynthesis and form the base of the food chain.

Front

What is the greenhouse effect?

Back

The warming of Earth’s surface due to the trapping of heat by greenhouse gases in the atmosphere.

Front

What is biodiversity?

Back

The variety of life in the world or in a particular habitat or ecosystem.

Front

What is an ecosystem?

Back

A community of living organisms interacting with their environment.