I think the answer is Specialized cells!
Oceans act as conveyor belts of cold and warm water, <span>sending heat toward the polar regions and helping tropical areas cool off.
helps distribute heat around the globe
stores solar radiation</span>
Answer:
"The earliest evidence for life on Earth comes from fossilized mats of cyanobacteria called stromatolites in Greenland that are about 3.7 billion years old. Ancient as their origins are, these bacteria (which are still around today) are already biologically complex—they have cell walls protecting their protein-producing DNA, so scientists think life must have begun much earlier."