A metamorphic rock is a type of rock which has been changed by extreme heat and pressure.  so must be option D
        
             
        
        
        
Answer:
RNA molecules are made of nucleotides. (Ans. C)
Explanation:
RNA, which is also known as ribonucleic acid is found in cytoplasm of the cell, and synthesized in the nucleus. It is shorter, and a single stranded molecule. It is composed of one or more nucleotides which are linked together by phosphodiester bonds.
In RNA, the ribonucleotide contains pentose sugar ribose, four nitrogenous bases (A,U,C,G), and a phosphate group. RNA plays many types of role in cells, but mainly involved in the translation process, and it's regulation which is known as protein synthesis.
 
        
                    
             
        
        
        
Answer:  Recycling saves energy by reducing or eliminating the need to make materials from scratch. ... By using recycled materials instead of pulling new natural resources, manufacturers can make the same products with less energy and expense.
Explanation:
I hope this helps you! Have a wonderfull day! ^v^
 
        
                    
             
        
        
        
Answer: One advantage is, well, the water. There’s plenty of it and it’s all around. Therefore, most aquatic plants do not need adaptations for absorbing, transporting, and conserving water. They can save energy and matter by not growing extensive root systems, vascular tissues, or thick cuticles on leaves. Support is also less of a problem because of the buoyancy of water. As a result, adaptations such as strong woody stems and deep anchoring roots are not necessary for most aquatic plants.
 
        
             
        
        
        
The two dogs sitting here are already poor and ignorant