Water and Carbon Cycles

Front

What are fossil fuels and how are they formed?

Back

Fossil fuels are natural resources like coal, oil, and natural gas formed from the decomposed remains of marine plants, algae, and animals over millions of years under heat and pressure.

Front

What process do organisms use to exhale carbon dioxide?

Back

Organisms exhale carbon dioxide through the process of Cellular Respiration, where they convert glucose and oxygen into energy, releasing CO2 as a byproduct.

Front

How have human activities impacted the carbon cycle since the mid-1800s?

Back

Human activities, such as burning fossil fuels and deforestation, have significantly increased carbon dioxide levels in the atmosphere, altering the natural carbon cycle.

Front

What is combustion and how does it affect the carbon cycle?

Back

Combustion is the process of burning fossil fuels, which releases large amounts of carbon dioxide into the atmosphere, contributing to climate change.

Front

How do living organisms return carbon dioxide to the atmosphere?

Back

Living organisms return carbon dioxide to the atmosphere primarily through respiration, where they break down food for energy and release CO2.

Front

What is photosynthesis and its role in the carbon cycle?

Back

Photosynthesis is the process by which plants convert carbon dioxide and sunlight into glucose and oxygen, removing CO2 from the atmosphere.

Front

Define the term 'carbon sink'.

Back

A carbon sink is a natural reservoir, such as forests or oceans, that absorbs more carbon dioxide from the atmosphere than it releases.

Front

What is the water cycle?

Back

The water cycle is the continuous movement of water on, above, and below the surface of the Earth, involving processes like evaporation, condensation, and precipitation.

Front

Explain the process of evaporation in the water cycle.

Back

Evaporation is the process where water changes from liquid to vapor, usually due to heat from the sun, and enters the atmosphere.

Front

What is transpiration?

Back

Transpiration is the process by which water is absorbed by plant roots, moves through plants, and is released as vapor through pores in leaves.