Layers of the Earth
Ecosystems and Types
Biotic and Abiotic Factors
Ecosystem Relationships
Biodiversity and Conservation
100

What is the outermost layer of the Earth called?

The crust

100

What is an ecosystem?

 A community of living organisms interacting with their environment

100

What term describes all living things in an ecosystem, like plants and animals?

Biotic Factors

100

What do we call the relationship where one animal hunts another for food?

Predator-prey relationship.

100

What is biodiversity?

The variety of life found in an area, including all plants, animals, and microorganisms

200

Which layer of the Earth is the thickest and lies just below the crust?

The mantle

200

Which type of ecosystem is known for its hot climate, high rainfall, and dense vegetation?

Rainforest

200

Name a non-living component of an ecosystem, like sunlight or rocks.

Abiotic factors

200

What is it called when two organisms live together and both benefit?

Mutualism

200

Why is biodiversity important for ecosystems?

It helps ecosystems remain stable and resilient to changes

300

Name the Earth’s layer made mostly of liquid metals like iron and nickel.

The outer core

300

Name the ecosystem that is dry, has very few plants, and experiences extreme temperatures.

 Desert 

300

Which type of factor, biotic or abiotic, would soil be classified as?

Abiotic factor

300

What kind of relationship occurs when one organism benefits, and the other is neither helped nor harmed?

Commensalism

300

What can humans do to help protect biodiversity?

Protect habitats, reduce pollution, and recycle

400

Which layer is the hottest and solid due to extreme pressure, located at the very center of the Earth?

 The inner core

400

What type of ecosystem would you find in oceans, rivers, and lakes?

Aquatic ecosystem

400

Give an example of a biotic factor in a coral reef ecosystem.

Fish, coral, or seaweed

400

When one organism lives off another, harming it, what is this relationship called?

Parasitism

400

What is the term for species at risk of extinction?

Endangered species

500

What is the Earth's layer where most plants, animals, and human activities occur?

 The crust

500

Which type of ecosystem has four seasons and trees that shed leaves in the fall?

Deciduous forest

500

What abiotic factor is essential for photosynthesis in plants?

Sunlight

500

In a food chain, what is the term for organisms that make their own food, usually through photosynthesis?

Producers

500

Which type of ecosystem is home to more species than any other on land?

The Rainforest