Answer:
Community garden would solve the "public health" problem
Explanation:
Community garden is a land where different fruits, vegetables and other plants are grown in shared land so as to meet the kitchen requirement. In the community garden people work combinedly in order to make a beautiful as well as productive space. Community garden idea allows people to interact with neighbors and can spend some time outdoor, able to make new friends in the colony and it can help in maintaining the mental and public health.
 
        
             
        
        
        
The answer is c because many things are losing their habitat and food sources
        
                    
             
        
        
        
Answer:
The correct answer is D.
Explanation:
Mutation refers to an alteration in the nucleotide sequence of the genome found in an individual. Mutation can be beneficial, harmful or neutral. A mutation is said to be beneficial when its effects add positively to the survival of the organism. On the other hand, a mutation is described as harmful if the effects is negative or neutral if it has no negative or positive effects. 
From the options given in this question, you will notice that all of them have beneficial effects with the exception of option D. A mutation that cause uncontrolled cell division is harmful and can lead to cancer.