Ecosystems
Grade 3 Science · Nevada, USA
Understand how living things interact in their environments.
Lessons
What Is an Ecosystem?
An ecosystem is a community of living things and the nonliving things around them, all working together.
Food Chains
A food chain shows the order in which living things eat other living things to get energy.
Producers, Consumers, and Decomposers
Producers make their own food, consumers eat other living things, and decomposers break down dead material.
Habitats and Niches
A habitat is the place where an organism lives. A niche is the role it plays in that habitat.
Protecting Ecosystems
Human actions can help or hurt ecosystems. We can protect them by reducing pollution and saving habitats.
People Also Ask
What topics are in Ecosystems for Grade 3 Science?+
The Ecosystems chapter covers multiple lessons aligned to the Nevada curriculum. Browse all lessons below to see the full topic list.
Is Ecosystems part of the Nevada curriculum?+
Yes, Ecosystems is part of the official Grade 3 Science curriculum in Nevada, USA.