Higher Order Thinking Questions:

What makes you think they are trees?

Why are trees mostly green?

Grickled grass is it a real grass?

Why are things names a certain way?

Barbaloots what kind of animals are they?

Do all mammals have fur, and 4 limbs?

Where do the barbaloots get there energy from?

Why would the author say something that wasn't scientifically true?

Why cant trees/plants talk, but animals have a way of communicating?

Vibrations make a sound, and you have to move something to create a sound?

Why does the Once-Ler feel an eregency to want something when you see an add that says "last chance to buy a thneed for next 100 miles"?

How do cars and people create littering smog, destruction of the grass, and erosion?

Why did he invent a machine, even though it created more destruction to the Earth?

Why is this a problem, when people bull doze, cut down trees, and move land?

Why didn't they recycle the trash from the sanitation truck?

Who would have opposed westered expansion?

How is this like our own history?

Why did the trees that were left look so bad now?

How did the trees  not get the things they needed?

Is the sun blocked by the smog?

Why are there two chairs? He was talking to himself? Do you Ever do this?

Is progress always progress?

Why the word unless?

What is a thought, but only you can change a thought?

Can the Once-Ler be anyone?