Question 1: The correct answer should be the one that shows the producer first, (->) followed by the herbivore, (->) with the carnivore last. 
Producers are organisms that harvest their own 'food' using things like the sunlight and water. Examples of producers are grass and other vegetation.

The herbivore, or an organism that consumes only vegetation and/or algae, consumes the producer.

 ⇒ 

The carnivore consumes meat, or other animals such as the herbivore. It's the last. 

 ⇒ 

 ⇒ 

Therefore the answer is 
B. 
____________________________________________________________
Question 2: I'm pretty sure that succession as well as regrowth after volcanic eruption (Just look at Mount St. Helens. After 30-35 years after the eruption, nature is 
still recovering) happens over time/slowly. I would say global warming [C](?) would be the answer. 
 
        
                    
             
        
        
        
Answer:
Reflex arcs
Sensory neuron sends electrical impulses to a relay neuron, which is located in the spinal cord of the CNS. Relay neurons connect sensory neurons to motor neurons. Motor neuron sends electrical impulses to an effector. Effector produces a response (muscle contracts to move hand away).
 
        
             
        
        
        
This maps says world old geography condition.first stage of Earth continent
        
             
        
        
        
the mitochondria breaks down chemical fuel into packets of chemical energy that can power the cell 
 
        
             
        
        
        
Answer: The answer is C- The plants in the P generation were not true-breeding
Explanation: