Hypothesis: Daphnias can increase in population at a room
temperature, rather than a colder or warmer temperature. 
Control group will be at a room temperature water. The experimental will be tested in cold and warmer waters.
Independent variable: change of water temperature. 
The data will be the amount of growth in which the water fleas population increases or decreases, a bar graph would work.
        
                    
             
        
        
        
Let's use process of elimination to answer this question!
D is wrong, and we know this because of the names of DNA and RNA. The D in DNA stands for deoxyribose, and the R in RNA stands for ribose. These are the types of sugars in each nucleic acid. Therefore, they don't both contain a ribose sugar.
C is wrong, and this is because RNA does not contain thymine, but uracil instead.
B is wrong, and we know this because we know that RNA is composed of only one strand, and therefore it is not composed of multiple stands (plural).
Therefore, A must be right. We can confirm this, because we know that polymers are large molecules consisting of repeated subunits. DNA and RNA are both polymers consisting of nucleotides.<span />
        
             
        
        
        
⭐️ A number of forces can cause gene mutations, such as smoking, radiation, viruses, cancer-causing chemicals (carcinogens), obesity, hormones, chronic inflammation and a lack of exercise.⭐️
        
             
        
        
        
Would the correct answer be A
        
             
        
        
        
<span>When a tuning fork vibrates over an open pipe and the air in the pipe starts to vibrate, the vibrations in the tube are caused by d. resonance. When the tuning fork vibrates near the open end of the cylinder, the sound waves from the fork are sent into the pipe. When one object vibrates, it forces another object to vibrate at the same frequency and this is called resonance</span>