Answer: the last ones wrong because to have lots of biodiversity you need different types of plants or organisms
A tundra has little to no trees 
The habitat one is correct 
Explanation:
 
        
             
        
        
        
The correct answer should be the endocrine system.
Hormones are secreted by endocrine glands in endocrine systems. Opposite of this would be the exocrine system consisting of exocrine glands.
        
                    
             
        
        
        
Three of the major characteristics used to classify organisms are cell structure, mode of nutrition and cellularity. These characteristics help scientists determine how organisms are similar to each other as well as how they are different from each other.
 
        
             
        
        
        
Wow, what a nice question. 
Yes Joanna did read that certain perfume esters would agitate bees.
 
        
             
        
        
        
Answer:
The cell wall present in fungi and bacteria permits these cells to withstand very dilute external medium without bursting.
Explanation: