5th Grade Science Interactions in an Ecosystem Lesson 1

All the living and nonliving things in an area interacting with each other is a(n) _____________.

The study of how living things and their environment interact is called ____________.

The nonliving parts of an ecosystem are _____________ factors.

All living things require ____________ to stay alive.

Living things also need ____________ such as iron and calcium.

Algae and plants must have sunlight to make ____________.

Algae and plants need carbon __________.

Animals require oxygen to produce the ___________ their bodies need.