Question

What is Elisha Otis best known for?

A.
He invented the first safe elevator.

B.
He designed Central Park in New York City.

C.
He was an architect who built the first skyscrapers.

D.
He devised an electrical system that used alternating current.

Answer 1

I think i now the answer but I'm not sure

Answer 2

what answer are you thinking it is? @hope2563

Answer 3

I think it's A

Answer 4

I think it's A

Answer 5

yeah it is A

Answer 6

thanks

Answer 7

@hope2563 can you help me on this question

Answer 8

What is the difference between osmosis and diffusion?

A.
Diffusion uses energy, but osmosis does not.

B.
Osmosis is movement of proteins, and diffusion is movement of water.

C.
Osmosis is a kind of diffusion that involves movement of water.

D.
Diffusion only occurs in animal cells and osmosis only occurs in plant cells.

Answer 9

@joseph2017