The answer is hydrogen bond between the complementary strands.
Explanation:
Glycogen is a complex carbohydrate that the body can easily and rapidly convert to energy. Glycogen is stored in the liver and the muscles. Muscles use glycogen for energy during periods of intense exercise. The amount of carbohydrates stored as glycogen can provide almost a day's worth of calories.
Living things cannot live without eachother due to the food chain, if an animal loses it's food so will his predator and so on. Soon they will end up extinct, this is why it's important to take care of animals.
A person would have to consider Harriet' s upbringing in that time and imagine all the wrong doing she has seen regarding her parents care; therefore, witnessing her own care as a slave as well. It's no wonder that eventually, one would desire they're own true freedom.