The group explores innovative ways to handle the volume and variety of plastics used in the community. When the particles in a solid have more thermal energy, they vibrate more quickly, and the temperature of the substance goes up.

As soon as the generator turned on, a loud hum filled every corner of the room.

The scientists were on a research expedition in frigid coastal waters when they observed the pod of whales.

Humans are the only animals known to blush.

Hurricane season is approaching, so you should make a plan for evacuation in case a storm heads your way.

The mimic octopus can change its coloring, and it can even contort its body to look like other creatures.

I exhaled loudly, and the instructor calmly offered reassurance.

During the board meeting, the superintendent will consider input from the public about a ban on cell phones in the classroom.

The inventor of cotton candy, who was surprisingly a dentist, had an idea for a new kind of sweet, and he teamed up with a candy maker to make it happen.

Which of these sentences are a simple, compound, complex, or compound-complex sentence