7th Grade Science Review #1

Front

What is an Energy Pyramid?

Back

An Energy Pyramid is a graphical representation that shows the flow of energy through different trophic levels in an ecosystem, illustrating how energy decreases as it moves up the pyramid.

Front

What happens to the lion population if the gazelle population does not rebound?

Back

The lion population would not rebound (go back up) because it relies on the gazelle population for food.

Front

Which organisms have the largest populations in an ecosystem?

Back

Plankton have the largest populations in an ecosystem, as they are the primary producers and form the base of the food web.

Front

What are nonrenewable resources?

Back

Nonrenewable resources are natural resources that cannot be replenished in a short period of time, such as oil, coal, and natural gas.

Front

What are the products of photosynthesis?

Back

The products of photosynthesis are oxygen and glucose.

Front

What is the role of producers in an ecosystem?

Back

Producers, like plants, convert sunlight into energy through photosynthesis, forming the base of the food chain.

Front

What is a food web?

Back

A food web is a complex network of feeding relationships among various organisms in an ecosystem, showing how energy and nutrients flow.

Front

What is the significance of decomposers in an ecosystem?

Back

Decomposers break down dead organic matter, recycling nutrients back into the soil and supporting plant growth.

Front

What is the difference between renewable and nonrenewable resources?

Back

Renewable resources can be replenished naturally over time (like solar energy), while nonrenewable resources are finite and take millions of years to form.

Front

What is the process of cellular respiration?

Back

Cellular respiration is the process by which cells convert glucose and oxygen into energy, producing carbon dioxide and water as byproducts.