Could anyone help me answer these questions? Your kindness would be much appreciated.

In which part of the body is a ball-and-socket joint found?

Suppose you are provided with an actively dividing culture of e. coli bacteria to which radioactive thymine has been added. what would happen if a cell replicates once in the presence of this radioactive base?

Methane gas created by a cows flatulence especially in a large herd is a greenhouse gas. true or false.