Here are some concepts: area, ecosystem, nonlive, organism

What is a sentence about these concepts?

Sentence is below.
ecosystem a system of interacting organisms and nonliving factors in a specified area .

Here are some concepts: color, flower, page

What is a sentence about these concepts?

Sentence is below.
coloring page from the flowers and butterflies

Here are some concepts: conference, politician, speech

What is a sentence about these concepts?

Sentence is below.
politician delivers his speech to the conference

Here are some concepts: glance, shoulder, walk

What is a sentence about these concepts?
Sentence is below.
He glances over her shoulder and walks sideways slightly.