10th Class Environmental Science Quiz

The process where water vapor from plants' leaves returns to the atmosphere.

The continuous movement of water between the Earth's surface, air, and living things.

Rainwater that flows over the land surface and collects in rivers and lakes.

A diagram showing how energy flows through an ecosystem, with producers at the bottom and consumers above.

The source of all energy in a food chain.

A model showing how multiple food chains are connected in an ecosystem.

Organisms that eat other organisms for energy.

The process of exchanging carbon dioxide and oxygen between living things and the environment.

Decomposers are organisms, like bacteria and fungi, that break down dead organic matter (plants and animals), releasing nutrients back into the ecosystem. They play a crucial role in recycling nutrients and ensuring that ecosystems remain balanced.

Producers, like plants and algae, are the foundation of food chains. They convert sunlight into energy through photosynthesis, producing food for themselves and other organisms in the ecosystem. Without producers, there would be no energy flow in the ecosystem.

Bacteria play a vital role in converting nitrogen gas from the atmosphere into a form plants can use. They also break down nitrogen-containing compounds in dead organisms, releasing nitrogen back into the soil.

The water cycle is a continuous process where water moves from the Earth's surface to the atmosphere and back again. It includes several stages: evaporation, condensation, precipitation, and collection. Conserving water slows down the rate of water being removed from natural waterways, allowing natural water levels to remain healthy.

Animals cannot directly use the nitrogen stored in the soil. Instead, they get their nitrogen by consuming plants that have absorbed it from the soil.

Animals take in oxygen for respiration and release carbon dioxide as a waste product. Nitrogen is a key component of their DNA and proteins, but they do not release it as a primary waste product.

The water cycle includes the processes of evaporation, where water changes into vapor, and condensation, where water vapor cools and forms clouds. These clouds can then release water back to the Earth as precipitation.

The arrows in a food chain represent the flow of energy and nutrients from one organism to the next. This energy is transferred as organisms consume each other, with a decrease in energy at each level.