Answer: a lot or. There is over 5 sapiebs 
Explanation: They are still looking for then
 
        
             
        
        
        
<h2>Evolutionary analysis of organisms</h2>
Explanation:
- Some organisms, which were characterized together determined to genetically very different .
- Using the analysis of RNA developed by Carl Woese, scientists are now able to classify  the human evolution 
- living things based on genetic information instead of expressed characteristics. 
- Genetic  information is more specific and can give clues as to the evolutionary ancestry of  organisms. 
- That is the reason adding of various domains in previous system of classification is allowed for a comparison of species genetic code
 
        
        
        
<span>Red blood cells normally have a biconcave shape (picture a donut, but instead of a hole through the centre there's just a downward slope to the centre of the cell). If the cell takes on water, it will increase in size and the sloped areas will start to flatten out. If the cell loses water, it will begin to shrivel. Use these observations and your understanding of osmosis to answer the question!</span>
        
                    
             
        
        
        
The question is asking to states on how i earth's early lang environment different than today's land environment and base on my research, I would say that in the past centuries or early ages, the Earth's land environment are compost of tree and plants and the air is still fresh. I hope you are satisfied with my answer and feel free too ask for more