Open Sci Ed - Ecosystems Units 1 & 2

Front

What is permafrost?

Back

Ground that stays frozen for years.

Front

What happens when permafrost thaws?

Back

Peat is exposed and able to decompose and burn.

Front

What causes competition for food in ecosystems?

Back

A large population of a species, such as wildebeest.

Front

How is energy and matter returned to the atmosphere from plants?

Back

Through decomposers.

Front

What is a carbon sink?

Back

A carbon sink is created when decomposition rates are slowed by cold and low oxygen levels.

Front

What role do decomposers play in an ecosystem?

Back

Decomposers break down dead organic matter, returning nutrients to the soil and releasing energy back into the atmosphere.

Front

What is the significance of peat in ecosystems?

Back

Peat stores carbon and can release it when it decomposes, impacting climate change.

Front

How does the population size of a species affect competition?

Back

Larger populations increase competition for limited resources like food.

Front

What factors can lead to the thawing of permafrost?

Back

Climate change and rising temperatures.

Front

What is the impact of herbivores on plant populations?

Back

Herbivores consume plants, which can limit plant growth and affect ecosystem balance.