Answer:
La Tierra primitiva no tenía una atmósfera o agua libre. El planeta estaba demasiado caliente para que los gases y el agua se acumularan.
Explanation:
 
        
             
        
        
        
Answer:
To find the fossil evidence to fill the largest remaining gap in whale evolution, you would search age sediment of 37MYA-46MYA. 
Explanation:
Fossils are the dead remains of living organisms. The gaps between the fossils usually point out the uncertainties in the understanding of precisely how species are evolved. However, the gaps do not indicate the weakness in the theory of evolution itself. There are many gaps in the fossil records that continue to shrink with time as new fossils are discovered. The gaps are contingent features of fossil records.
Secondly, to discover the fossil evidence to fill the largest remaining gap in the evolution of whale, you would search the age sediment of 37MYA-46MYA.
 
        
             
        
        
        
Answer:
Euglena is a large genus of unicellular protists
Explanation:
They have both plant and animal characteristics. All live in water, and moves by means of a flagellum. This is an animal characteristic. Most have chloroplasts, which are characteristic of Algae and Plants
 
        
                    
             
        
        
        
Answer:
7 neutral
Explanation:
it is because water is something that has no taste and it's expands because of the pressure that it's feeling
 
        
             
        
        
        
Answer:
Crossing over is the phenomenon by which homologous chromosomes exchange DNA segments between them during the process of meiosis.
 If crossing over did not occur, there will be no genetic variation among parents and offsprings. 
If the process of meiosis did not occur, there will be lesser chances of genetic variations to occur. Each chromosome will be either from the father or the mother with no genetic diversity present in it. As a result,  genetic diversity will reduce.