Answer: it’s distant objects shift in frequency toward red on the electromagnetic spectrum, which tells us objects are moving away from us!
Explanation: This is correct because I got this one right on my quiz and I took notes on it!
 
        
             
        
        
        
Circulatory system and nucleus
        
             
        
        
        
Answer:
<em>The statement that is incorrect is :</em>
<em>Robert wanted to see if his theory was true that cigarette smoke will influence web-building in spiders.</em>
Explanation:
A theory can be described as a descriptive explanation of a phenomenon which is supported by valid experiments and careful examination of facts. As Robert, has not conducted any experiments nor has proved his study with reference to facts, hence it cannot be considered as a theory.
Robert wanted to see if his observation was true that cigarette smoke will influence web-building in spiders will be the correct statement that could be used. 
 
        
             
        
        
        
Answer:
its D.
Explanation:
Bacteria change nitrogen gas to useable compounds that can be absorbed by plants.   
Brainliest plz
 
        
             
        
        
        
Answer:
The student claim is incorrect
Explanation:
Uncontrollable cell division leads to formation of tumours and cancers if cells were to lose contact inhibition and migrate to other parts of the body.