<span>Pyrolobus fumarii belongs to the kingdom of archaebacteria that is a thermophile which thrives at very high temperatures as much as 113 C. </span>It was  first discovered in 1997 in a hydrothermal vent where the temperature is as high as that. It belongs to the p<span><span>hylum Crenarchaeota, c</span><span>lass Thermoprotei, </span><span>Order Desulfurococcales and </span><span>Family <span>Pyrodictiaceae. Answer is B. </span></span></span>
 
        
        
        
Answer:
Different brands of nail polishes used by Sarah.
Explanation:
While conducting an experiment two different variables are considered namely dependant variable and independent variable. The variable which is continuously changed to see the effects is called as independent variable and the variable which is being tested is called as dependant variable. 
In the given scenario, Sarah want to know best brand of nail polishes which lasts longest without chipping. Thus the different brands of nail polish used by her is considered as independent variable.
 
        
             
        
        
        
Answer:
Will eating too much fat in food cause brain cancer?
Explanation:
 A good scientific question is one that can have an answer and be tested. Avoid how and why questions.
 
        
             
        
        
        
Explanation:
A food web shows how organisms in a community prey and feed on each other (feeding relationships). It is composed of many interconnected food chains. In addition, it, therefore, shows how energy is transferred up an ecosystem from the primary producers (in this case the trees and grass) to the tertiary consumers (in this case the hawks and wolves). 
Learn More:
For more on food webs check out;
brainly.com/question/12503388
brainly.com/question/11224588
#LearnWithBrainly
 
        
             
        
        
        
A D B A C D D A C B B A D