Biology EOC RC 5

Front

What are abiotic factors?

Back

Abiotic factors are the non-living components of an ecosystem that affect living organisms. Examples include water, sunlight, air, and soil.

Front

How much energy is transferred to the next trophic level in a food chain?

Back

Typically, only about 10% of the energy from one trophic level is transferred to the next level.

Front

What is the impact of non-native species on local ecosystems?

Back

Non-native species can disrupt local ecosystems by outcompeting native species for resources, leading to declines in biodiversity.

Front

What is respiration in the context of ecosystems?

Back

Respiration is the process by which organisms convert glucose and oxygen into energy, releasing carbon dioxide as a byproduct.

Front

What causes dead zones in aquatic environments?

Back

Dead zones are caused by excessive nutrient pollution (like fertilizers) leading to algal blooms, which deplete oxygen in the water.

Front

Define 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

What role does rain runoff play in ecosystems?

Back

Rain runoff can carry pollutants and nutrients into water bodies, contributing to issues like algal blooms and dead zones.

Front

What are producers in a food chain?

Back

Producers are organisms that create their own food through photosynthesis or chemosynthesis, forming the base of the food chain.

Front

Explain the term 'trophic level.'

Back

A trophic level is a position in a food chain or food web, representing the flow of energy and nutrients from one level to the next.

Front

What is the significance of decomposers in an ecosystem?

Back

Decomposers break down dead organic matter, recycling nutrients back into the ecosystem and maintaining soil health.