The Earth is thought to be over 4.5 billion years old. The first life that appeared on Earth was about 3.77 billion years ago. We cannot definitively say what the first organism was; our educated guess is that it must have been a prokaryote....
Let me ask you, does the first fertilized egg still exist? Does it disappear? If it didn't disappear, then where did it go? In what form? Through two similar cases, I discovered an amazing secret. The first organism to appear on Earth has not disappeared. Just like the fertilized eggs...
Did oxygen exist in the atmosphere during the Proterozoic? What diffuses out of single-celled marine organisms? What kind of bacterium requires oxygen? What organisms make up the first trophic level? Green algae is the oldest ancestor of what organism?
A very large number of microorganisms exist in nature. Therefore, in the initial stage, many types of microorganism are expected to adhere to the surface of the plastic. Among them, only a few microorganisms are capable of degrading biodegradable plastic. Over time, microorganisms that can ...
The successful colonization of new habitats has played a fundamental role during the evolution of life. Salinity is one of the strongest barriers for organisms to cross, which has resulted in the evolution of distinct marine and non-marine (including bot
That makes it the longest living non-clonal organism found on Earth. Who was the first human? The First Humans One of the earliest known humans isHomo habilis, or “handy man,” who lived about 2.4 million to 1.4 million years ago in Eastern and Southern Africa. ...
leading to a change in the genetic code, or alternatively, if two or more viruses happen to co-exist within a cell for long enough they can recombine their genetic information during replication. Either process can result in functional changes for the virus – including the ability to infect ...
Earth life, it is a single cell that lived in the deep ocean billions of years ago, flourishing in the warmth of magma or sulfur vents. It was not the first life on Earth. But it was the only life whose descendants survived to the present. All its contemporaries have been extinguis...
What present-day organisms are similar to the first autotrophs? Which organisms have produced the oldest fossil evidence? What is the simplest level at which life may exist? What is the oldest organism? What were the dominant organisms living in the Precambrian time? What must a single-celled...
Infectious diseases affecting the eye often cause unilateral or asymmetric visual loss in children and people of working age. This group of conditions includes viral, bacterial, fungal and parasitic diseases, both common and rare presentations which, in