The answer is B
Explanation: RNA is single stranded and contain uracil
Hypontonic <span>environment
</span>
67 million years ago in the form of phyollths (small sllica flecks in grass that make it difficult to digest)
Monosaccharides are simple sugar unit molecules, whereas polysaccharides are enormous, linking thousands of sugar units. Monosaccharides provide cells with short-term energy. Polysaccharides provide long-term energy storage and rigid structure to cell walls and exoskeletons of animals.