<span>First are similarities, well, literary both have ‘green’.
And both have ‘house’ too. So the only similarities of the two are of their
words. But they differ so much if we contrast them because greenhouse effect is
a social problem where the gases from CFCs accumulated to the earth’s
stratosphere causing pollution and trapped heat. Green house is one of the ways people could
avoid greenhouse effect. In making your house green, that is making it
plant-friendly, you will be breathing more oxygen, less carbon dioxide.</span>
<span>I believe this sequence of the followings represented above is correct and could help you in your homework.
Beowulf dives into the water.
</span><span>Several Danes carry Grendel's severed head back to Heorot.
</span>Beowulf finds that Hrunting is useless against Grendel's mother.
<span>Beowulf slays Grendel's mother with a giant sword.</span>
