Man and his Environment-NFE

Plants obtain nitrogen from the soil in the form of:

 
 
 
 

Which of the following is an example of an abiotic factor in an ecosystem?

 
 
 
 

Which of the following gases is primarily responsible for global warming?

 
 
 
 

Which human activity is a major contributor to deforestation?

 
 
 
 

The major source of oxygen in the atmosphere is:

 
 
 
 

Which of the following is a renewable resource?

 
 
 
 

Which of the following is an example of a secondary consumer?

 
 
 
 

Why do food chains rarely exceed four or five trophic levels?

 
 
 
 

Which type of symbiotic relationship benefits one organism while the other remains unaffected?

 
 
 
 

Which of the following organisms can fix atmospheric nitrogen?

 
 
 
 

Question 1 of 10