Ecosystem Concepts and Interactions

Emerald Robinson explores Earth's ecosystems, defining them as communities of living and non-living components. The video explains the biotic and abiotic parts, energy flow through food webs, and the concepts of niche and habitat. It highlights threats like climate change and pollution, and the role of ecologists in conservation.

What is an ecosystem?

• A group of non-living things.

• A community of living things interacting with non-living parts of their environment.

• A community of living things interacting with each other.

• A large forest or coral reef.

Which of the following is a biotic component of an ecosystem?

• Plants

• Rocks

• Water

• Minerals

What is an example of an abiotic component?

• Bacteria

• Fungi

• Animals

• Minerals

How do producers like plants obtain energy?

• By absorbing minerals from rocks

• By decomposing organic matter

• Through photosynthesis

• By consuming other animals

What is the role of a food web in an ecosystem?

• To regulate the climate

• To create new habitats

• To distribute energy through the ecosystem

• To provide shelter for animals

What is a habitat?

• A behavior of an organism

• A type of food an organism eats

• A specific role of an organism in the ecosystem

• A place where an organism lives

What defines an organism's niche?

• Where it lives

• What it eats

• How it behaves

• All of the above

What happens when two organisms occupy the same niche for a long time?

• They share resources equally

• They form a new niche

• One outcompetes the other

• They both go extinct

Which of the following is a threat to Earth's ecosystems?

• Niche competition

• Climate change

• Photosynthesis

• Food webs

Who studies and monitors the health of ecosystems?

• Biologists

• Meteorologists

• Ecologists

• Geologists