Life Science: Ecosystems

The video tutorial explores ecosystems, their components, and the interdependence of organisms within them. It explains the concepts of food chains and food webs, highlighting the roles of producers, consumers, and decomposers. The tutorial also discusses the impact of changes in ecosystems, such as overfishing and pollution, and how these can lead to imbalances. It emphasizes the importance of maintaining ecosystem balance and the potential consequences of disruptions, including species endangerment and extinction.

What is a habitat in the context of an ecosystem?

• A group of different species living together

• The place where a population lives

• A large body of water

• A type of plant found in ecosystems

Which of the following is considered a producer in most food chains?

• Bald Eagle

• Mayfly

• Trout

• Algae

What would likely happen if all the trout were removed from the ecosystem?

• The bald eagles would have more food

• The number of mayflies would decrease

• The number of mayflies would increase

• The algae would increase

What role do decomposers play in an ecosystem?

• They consume other animals

• They produce energy from sunlight

• They are the top predators

• They break down dead plants and animals

Which animal is an example of an omnivore in the food web?

• Bald Eagle

• Trout

• Grizzly Bear

• Mayfly

What can negatively affect the numbers of a population in an ecosystem?

• Abundant food supply

• Introduction of new species

• Balanced ecosystem

• Stable weather conditions

What might happen if several factors change at once in an ecosystem?

• The wildlife population may become endangered

• The ecosystem will become more diverse

• The ecosystem will remain unchanged

• The wildlife population will thrive