Answer:
i believe the answer is food web.
 
        
             
        
        
        
Answer: Europeans wanted to control Africa's vast mineral resources. ... Most Europeans believed that Africans were inferior and thought it was their duty to civilize the African.
Explanation:i think this is the answer not that sure hope i helped tho:)
 
        
             
        
        
        
Answer:
It was made to protect individuals from being tried twice for the same crime.
 
        
             
        
        
        
Add a catalyst 
- would increase rate of reaction; 
Because adding catalyst would lower activation energies. 
Decrease the concentration of a reactant 
- would decrease rate of reaction; because there would be less molecule
Decrease the surface area of a solid reactant
 - decrease rate of reaction; less collisions because more particles would become isolated
Increase the temperature 
- Would increase reaction; Because it would accelerate the movement of the particles and make them colliding faster
        
             
        
        
        
Answer:
This will lead to a biased sample because the type of students who take Psychology and Law may be different from the type of students who take Introduction to Neuroscience
Explanation:
Professor Kramer has decided to measure how happy his students are with his teaching this semester. He is teaching two classes this semester—Psychology and Law and Introduction to Neuroscience. He gives his students a survey.
In the above scenario, Dr. Kramer plans to give his survey only to his Psychology and Law students because he sees them on Mondays, Wednesdays, and Fridays and he can spare the class time (unlike in his Introduction to Neuroscience class, which only meets on Tuesdays and Thursdays). Which of the following is true?
This will lead to a biased sample because the type of students who take Psychology and Law may be different from the type of students who take Introduction to Neuroscience.