No, it needs to be a metal in order to show the malleability of copper.
New Moon. This is because the light from the sun is being pointed at the other side of the moon ( the side we can not see ).
Answer:
The main difference between sieve tubes and companion cells is that sieve tubes are the long, narrow, pointed tubes present in the phloem of angiosperms whereas companion cells are attached to the sieve tubes, regulating the activity of sieve tubes.