Economic importance of Angiosperm and Gynosperm

Up until 1938, paleontologists accepted the idea that coelacanths (an ancient fish) went extinct at the time that they last appear in the fossil record, about 80 million years ago. but in 1938, a live coelacanth was discovered off the coast of south africa that was compared to the fossil record and found to be the same species what goal of science does this discovery represent

Animals that have thick fur and ae able to store large amounts of body fat live where ?

What if the yeast were extremely active and produced more than 100ml gas. would you know? why/why not