Non point is pollution from many locations and pinpoint is pollution from one source and easy to track
Even though both organelles are found in eukaryotic cells<span>, both </span>mitochondria and chloroplast<span> have characteristics often found in </span>prokaryotic cells<span>. These </span>prokaryotic cell<span> characteristics include: an enclosed double membrane, circular DNA, and bacteria-</span>like<span> ribosomes.</span>
The answer is; A
Since the earth was formed approximately 4.6 billion years ago, the heat that was generated during its formation has not been entirely lost. Some of the heat is still insulated inside the earth (below the crust) and is only lost very slowly over time. In addition, the earth hardly cools because the lost heat is replenished by the heat from radioactive elements that decay in the earth’s core. Some of these radioactive elements are uranium.
So, all the continents can combine into a supercontinent we call Pangea. We believe Pangea was formed a long time ago. Because of different world events (earthquakes, fissures,ice melting, the meteor that hit the dinosaurs, etc)this supercontinent split and the continents drifted away eventually forming the modern day topography we know today. We have evidence that Pangea was formed a long time ago because of similar species on different continents that would be too far away to share a common ancestor otherwise. (think about birds being on every continent, they can't have flown all the way across the Atlantic/Pacific)
