Which part of the sun can you see only during an eclipse?

a) chromospheres

b) sunspot

c) corona

d) photosphere

The answer is C)Corona 
This true because during an eclipse, there will be a ring of sunlight called the Corona.
Hope this helps you

This is what i found on google“ the monomers combine with each other via covalent bonds to form larger molecules known as polymers. in doing so, monomers release water molecules as byproducts. this type of reaction is known as dehydration synthesis, which means “to put together while losing water. in the process, a water molecule is formed.” i hope this you