<span>There are four possible phenotypes with a dihybrid testcross. The 1:1:1:1 ratio means that there is an equal chance of any of the four expected phenotypes in the offspring.</span>
        
             
        
        
        
Answer:
The correct answer is A. Fossil fuels are cheaper than alternative forms of energy
Explanation:
Fossil fuels are made from organic matter of dead animals and mainly plants  who were buried in the soil over hundred and thousand of years. We use fossil fuels because they are the best source to provide energy in the current time.
Fossil fuels are easily available and are present in very large amount which is the main reason for it to be cheaper. Fossil fuels like coal, petroleum or natural gas are more cheaper and efficient than alternative forms of energy like solar or wind energy.
But in future these fossil fuel will not be there and alternative forms of energy will become the primary and cheaper source of fuel. 
 
        
                    
             
        
        
        
Answer: Both types of the organism assemble proteins 
Explanation:
The statement that is true for all the prokaryotes and eukaryotic organism. both of the organism assemble protein through the process of transcription and translation.
Both type of the organism use different-different machinery but assemble protein by transcription and translation.
Transcription and translation is the process by which the protein synthesis takes place.
 
        
             
        
        
        
Answer: Groundwater can remain in subsurface storage for long periods of time.
Explanation:
The ground water is the water reservoir that gets accumulated beneath the earth crust due to the accumulation of water that seeps into the soil and rock due to the absorption by water bodies river, lakes, ponds, oceans, and rain or any kind of precipitation. The groundwater remains as a subsurface storage of water until the site of groundwater is searched and water is extracted from it for household, agricultural or industrial purposes.