Plants & Photosynthesis
Food Chains and Living Things
Ecosystems and Factors
Human Impact and Problems
Causes and Effects in ecosystems
100

What do plants need from the sun to make their own food?


Sunlight (energy from the sun)


100

What do we call living things that make their own food?


Producers

100

What is an ecosystem?


An ecosystem is a place where living and nonliving things interact.


100

What is pollution?


Pollution is when the environment gets contaminated.


100

What is climate change?


Climate change is long-term changes in Earth’s weather and temperature.


200

What is the name of the food that plants make for themselves?


Glucose (food)


200

What do we call living things that eat plants or other animals?


Consumers

200

Name two ecosystems we studied.


Any two: desert, pond, ocean, forest, arctic


200

Name one way humans negatively impact ecosystems.


Examples: pollution, deforestation, littering, plastic use, energy waste, overconsumption


200

What is the greenhouse effect?


The greenhouse effect is when gases trap heat in Earth’s atmosphere and warm the planet.


300

Name two things plants need (besides sunlight) to make food.


Water and carbon dioxide
(minerals from the soil are also acceptable)

300

What is a food chain?


A food chain shows how energy moves from one living thing to another when they eat each other.


300

What is the difference between biotic and abiotic factors?


Biotic factors are living things, and abiotic factors are nonliving things like water, air, soil, and sunlight.


300

What is deforestation, and why is it harmful?


Deforestation is cutting down many trees, which destroys habitats and reduces oxygen and biodiversity.


300

How does global warming cause rising sea levels?


Global warming melts ice and glaciers, causing sea levels to rise.


400

What gas do plants produce during photosynthesis that humans and animals need to breathe?


Oxygen


400

What is the difference between a terrestrial food chain and an aquatic food chain?


A terrestrial food chain happens on land, and an aquatic food chain happens in water.


400

Give one example of how little water can affect organisms in an ecosystem.


Little water can cause plants to die, animals to migrate, or organisms to not survive.


400

How does plastic use and littering affect animals and ecosystems?


Plastic and littering can harm animals, pollute water and land, and damage ecosystems.


400

Explain how environmental problems can cause food and water shortages.


Environmental problems can damage ecosystems, reduce crops and clean water, and cause food and water shortages.

500

Explain why photosynthesis is important for both plants and animals.

Photosynthesis is important because it helps plants make their own food to grow and survive, and it produces oxygen and food that animals and humans depend on.

500

Give one example of a terrestrial food chain and explain what would happen if one organism disappeared.

Example: Grass → rabbit → fox.
If one organism disappears, the food chain is affected and other organisms may not have enough food to survive.

500

Explain why food chains are different in the desert, ocean, forest, pond, and arctic.

Food chains are different because each ecosystem has different plants, animals, climate, and resources.

500

Explain how overconsumption can lead to loss of biodiversity.

Overconsumption uses too many resources, destroys habitats, and causes species to disappear, leading to loss of biodiversity.

500

Explain how climate change can lead to extreme weather and human health problems, and how protecting ecosystems can help.

Climate change causes extreme weather like storms, droughts, and heat waves, which can harm human health. Protecting ecosystems helps reduce these effects and supports life on Earth.