8.5E, 8.5I, 8.4C

Front

What is the Law of Conservation of Mass?

Back

The Law of Conservation of Mass states that mass is neither created nor destroyed in a chemical reaction. The total mass of the reactants equals the total mass of the products.

Front

Define an ecosystem.

Back

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

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.

Front

Explain the difference between a food chain and a food web.

Back

A food chain is a linear sequence of organisms where each is eaten by the next one, while a food web is a complex network of interconnected food chains in an ecosystem.

Front

What is a producer in an ecosystem?

Back

A producer is an organism that can make its own food through photosynthesis or chemosynthesis, serving as a primary source of energy for other organisms in the ecosystem.

Front

Define a consumer in ecological terms.

Back

A consumer is an organism that cannot produce its own food and instead obtains energy by eating other organisms, which can be plants (herbivores) or other animals (carnivores and omnivores).

Front

What is a decomposer?

Back

A decomposer is an organism, such as bacteria or fungi, that breaks down dead organic material, returning nutrients to the soil and completing the cycle of matter in an ecosystem.

Front

What is biodiversity?

Back

Biodiversity refers to the variety of life in a particular habitat or ecosystem, including the number of different species, genetic diversity, and the variety of ecosystems.

Front

Explain the concept of an energy pyramid.

Back

An energy pyramid is a graphical representation of the energy flow in an ecosystem, showing the energy available at each trophic level, with producers at the base and top predators at the apex.

Front

What is an invasive species?

Back

An invasive species is a non-native organism that, when introduced to a new environment, can cause harm to the ecosystem, economy, or human health.