The costal cartilage connects the two together
        
             
        
        
        
A bioindicator is a living organism that gives us an idea of the health of an ecosystem. Some organisms are very sensitive to pollution in their environment, so if pollutants are present, the organism may change its morphologyphysiology or behaviour, or it could even die. Hope that helped!
        
             
        
        
        
Answer:
Is the benefit worth the cost?
Explanation:
Environmental policies application has to lead to some economic cost.
When coming up with this policies, the effect that this policies shall have towards environmental protection shall be considered.
The cost and economic effect that this policies shall cause should also be looked at.
If a policy causes insignificant change towards environmental protection and at the same time the costs are too high, then the policy should be dropped.
If a policy has got significant impact and costs less, the it should be taken.
 
        
                    
             
        
        
        
Most populations changed from mostly light colored to mostly dark colored in the 1800s. This relates to microevolution.
        
             
        
        
        
Digesting a sandwich
because your stomach acids break down the food so it can be digested and what not