Blood is made in bone marrow !
three functions of skeleton muscle...
1) help in movement 
2)help in carrying something 
3) support skeletons
        
             
        
        
        
The answer is 1. //////////////////////
        
             
        
        
        
12)
receptor cell bodies are found in the dorsal ganglia which is F
relay cell bodies are found in the grey matter which is G
effector neuron bodies are found in the grey matter which is G
so the answer is D
13)
J is the dorsal root of the spinal nerve and contains the axons of the sensitive cells
H is the anterior root of the spinal nerve and contains the axons of the motor cells
therefore the answer is C
14)
F is the dorsal ganglion
I is the spinal nerve
hence, the answer is B
15)
first they come through the spinal nerve which is (I), then they go through the dorsal root, which is (J) then the impulses go through the grey matter(G) , they go through the anterior root(H) and finally through I
the answer is A
 
        
             
        
        
        
The right option is b. mutualism
Mutualism is a relationship
between two organisms of different species in which both organisms benefit from
the relationship. From the question given above, both the oxpeckers and the
zebras benefits from the relationship. This type of relationship describes
mutualism.
 
        
             
        
        
        
Answer: reproduction, heredity, variation in physical characteristics and variation in number of offspring per individual.
Explanation: