Answer:
The most important reason for learning about environmental systems is due to the fact that we should know what's going on in the world around us. If we were to travel to Asia, we should know the forests that lie there to pack appropriately. It's also important to just be aware of how the world works. It's also good to know what rock type you'll be walking on, so you can pack shoes accordingly. Overall, it's better to know the world around you than to live in ignorance.
Answer:
Scabies usually is spread by direct, prolonged, skin-to-skin contact with a person who has scabies. Contact generally must be prolonged; a quick handshake or hug usually will not spread scabies. Scabies is spread easily to sexual partners and household members.
Answer:
Carbohydrates contain the elements of carbon, hydrogen, and oxygen, and only those elements with a few others.
Lipids/fat contain hydrocarbons and make up the building blocks of the structure and function of living cells. Examples include: fats, oils, waxes, and certain vitamins (such as A, D, E, and K).
Proteins contain carbon, hydrogen, and oxygen like the carbohydrates and lipids, but they also contain nitrogen and often sulfur and phosphorus.
Nucleic Acids are the large biomolecules that are essential to all known forms of life. The term nucleic acid is the overall name for DNA and RNA. Consisting of Nucleotides, which are the monomers made of three components: a 5-carbon sugar (a phosphate group and a nitrogenous base).
