19. B - mitochondria
20. D - vegetative structure
21. C - inducing a mutation
22. A - phosphates
23. C - fungi
24. A - provides support
25. C - sponges
26. B - opposite charges
27. D - asexual reproduction
28. not sure about this one sorry
29. D - all of the above
30. A - prevents ions and large molecules from passing through the membrane
        
             
        
        
        
Answer:
2, phenotype
 traits are determined using genetics
 
        
             
        
        
        
The Electrons would need to be in a covalent bond. Covalent means that the electrons are equally shared between atoms. 
Please mark as brainliest if this helped you:))) 
        
             
        
        
        
 Answer:  A new study in the journal Biotechnology for Biofuels has found that those wasted watermelons could be turned into up to 2.5 million gallons of ethanol. It turns out that watermelon juice is a great base to make ethanol from -- it's full of sugar and yeast-friendly amino acids. 
Explanation:
I hope it helps you!