Carbon dioxide is the only that get filtered through each of those cycles
 
        
             
        
        
        
I think the correct answer is C. Hope this helps.
        
                    
             
        
        
        
Answer:
A) bears, skunks, and woodpeckers living in a forest
Duh
 
        
             
        
        
        
QUICK ANSWER
A combination of sand, salt and water is an example of a heterogeneous mixture. A heterogeneous mixture is a type of combination where the constituents of the mixture are not uniform, and there are two or more distinctive phases of separation.
 
        
        
        
Answer: The vulnerable embryo must be sheltered from desiccation and other environmental hazards. In both seedless and seed plants, the female gametophyte provides protection and nutrients to the embryo as it develops into the new generation of sporophyte. 
Explanation:
i think this may help