Given a scientific question, generate a correct answer to it.

What bifurcates into the right and left bronchi in the lungs?
trachea

What is the process of the transfer of pollen from an anther to a stigma in angiosperms called?
pollination

All alkanes are composed of carbon and hydrogen atoms, and have similar bonds, structures, and formulas; noncyclic alkanes all have a formula of cnh2n+2. the number of carbon atoms present in an alkane has what?
no limit