<u>Answer</u>: B.The heliocentric model shows that Earth revolves around the Sun. The geocentric model shows that the Sun revolves around Earth.
The geocentric model is also known as the Ptolemaic model and had as center of the Universe Earth. However, the heliocentric model presented by Nicolaus Copernicus and Galileo Galilei, had the sun as the center of the Solar System, with Earth orbiting around it. However, it is thought that this theory was older than Copernicus. 
 
        
             
        
        
        
"A gene pool consists of all genes, including all the different alleles that are present in a population. Number of times an allele occurs in a gene pool compared with the number of times other alleles occur. In genetic terms, evolution is any change in the relative frequency of alleles in a population."
 
        
                    
             
        
        
        
Answer:
a chain of amino acids makes a protein
 
        
                    
             
        
        
        
Answer: Coastal estuary 
Explanation:
Euryhaline animals are able to live in the wide range of salinity.These animals have the ability to live in the variety of water mostly fresh water.
The coastal estuary is one of the habitat of such animals. The green crab, molly fish are some example of the animals found in this environment.
Some of the euryhaline animals are also found in the salt and brackish water, fresh water, moderately haline et cetera.
 
        
             
        
        
        
Answer:
Lakes and rivers provide Canadians not only with drinking water, food, transportation networks and recreational opportunities, but also with hydroelectricity. In fact, Canada is one of few countries around the world to rely on hydropower for more than half of its electricity needs.
Explanation: