Here are some concepts: boulder, environment, flow, meadow, waterfall

What is a sentence about these concepts?

Sentence is below.
waterfalls flowing in idyllic uncontaminated environment crossing green meadows and boulders in summer

Here are some concepts: know, live, organism

What is a sentence about these concepts?

Sentence is below.
to understand the biology of marine organisms we must know something about the environment in which they live .

Here are some concepts: airplane, ascend, take

What is a sentence about these concepts?

Sentence is below.
An airplane has just taken off and is ascending in the sky.

Here are some concepts: mist, rise, ruin

What is a sentence about these concepts?
Sentence is below.
the ruins rise eerily out of the mist