Who was Rachel Carson?

Science

Rachel Carson was a marine biologist, a conservationist and _________________.

A scientist who works to protect the environment and wildlife

Which of these is NOT a way to reduce plastic pollution?

When something makes a sound what happens to the particles in the air?

Alexander Graham bell invented the telephone.

Miller Hutchinson invented the first electric hearing aid.

A telephone works by converting sound to ______________ and then back to sound.