Methane hydrates in the ocean are a significant source of methane true or false

True

Reason -

Methane hydrates are also known as hydromethane, methane clathrate etc. and it has a cage like structure where methane is entrapped in the crystal structure of water. Its deposits are found at the ocean floor . Methane hydrates are usually stable at low oceanic temperature but as the water of ocean gets warmer, the crystal structure of hydrate breaks there by releasing methane in the ocean.  

autosomal

explanation:

is a term used in genetic genealogy to describe dna which is inherited from the autosomal chromosomes

tissue

explanation:

it is actually formed by geoup of cells which is tissue