Examples:
- Consumption: The consumption of water in a household can be reduced by fixing leaky faucets and taking shorter showers.
- Greenhouse gas: Carbon dioxide is a greenhouse gas that is released into the atmosphere through the burning of fossil fuels.
- Natural mineral resource: Gold is a natural mineral resource that is mined from the Earth's crust for use in jewelry and electronics.
- Population: The population of New York City is over 8 million people.
- Alternative source of energy: Solar panels are an alternative source of energy that harness the power of the sun to generate electricity.
- Greenhouse effect: The greenhouse effect is causing the Earth's temperatures to rise, leading to climate change.
- Conserve: It is important to conserve water by turning off the faucet while brushing your teeth.
- Agriculture: Agriculture plays a crucial role in feeding the world's population by producing crops such as wheat, corn, and soybeans.
- Algal bloom: An algal bloom in a lake can cause the water to become green and murky, harming aquatic life.
- Atmosphere: The Earth's atmosphere is composed of several layers of gases, including nitrogen, oxygen, and carbon dioxide.
- Carbon dioxide: Carbon dioxide levels in the atmosphere are increasing due to human activities like burning fossil fuels.
- Climate change: The melting of polar ice caps is one of the effects of climate change.
- Crop rotation: Farmers practice crop rotation to improve soil health and prevent the spread of pests and diseases.
- Decompose: Dead leaves decompose on the forest floor, enriching the soil with nutrients.
- Fertilizer: Farmers use chemical fertilizers to help their crops grow faster and produce higher yields.
- Fossil fuel: Oil is a fossil fuel that is used to power cars, planes, and other forms of transportation.
- Global warming: Global warming is causing glaciers to melt and sea levels to rise.
- Habitat: The rainforest is a habitat for a diverse range of plant and animal species.
- Heat island effect: Cities like Tokyo experience the heat island effect due to the high concentration of buildings and pavement.
- Organism: A giraffe is a large mammal that is a unique organism in its environment.
- Synthetic: Plastic is a synthetic material that is used in the production of many consumer goods.