This question is incomplete. The options are:
a. Oligocene b. Eocenec. Miocene<span>d. Pleistocene
</span>Option b is correct. This relates to the Paleocene-Eocene Thermal Maximum (PETM) which occured around 56 million years ago and was similar to modern-day climate change. Warming of more than 5 degrees Celcius occured over<span> 15-20 thousand years because of input of more than 2000 gigatons of carbon into the atmosphere. The PETM resulted in mass deep ocean extinctions and mass terrestrial and shallow ocean diversification.</span>
<span>The first step to plan a quinceanera is create your guest list. This will help you decide how many invitations, party favors, thank you cards, etc.</span>
I think the correct answer from the choices listed above is option D. A prokaryote that release energy if it is in an environment without oxygen and dies when exposed to oxygen, and uses fermentation would most likely be an obligate anaerobe. Obligate anaerobes<span> are poisoned by oxygen, so they gather at the bottom of the tube where the oxygen concentration is lowest.</span>
