Answer:
<em>The correct option is C) happened by chance</em>
Explanation:
Mutations can be described as any changes which occur in the DNA of an organism. Mutations can be natural or induced through methods like the use of chemicals.
Mutations occur randomly and happen by chance. Hence, option C is correct.
Other options like option A are false because mutation is the sudden change in the genome of an organism. Hence, mutations will not cause the teeth to grow longer until they reach an optimal length.
1-Energy in food is measured in Calories. A Calorie is the amount of energy it takes to raise the temperature of 1kg of water by 1 Celsius.
2-Digestion is the mechanical and chemical breakdown of food into small particles and molecules that your body can absorb and use.
3-Carbohydrates are molecules made of carbon, hydrogen, and oxygen atoms and are usually the bodies major source of energy. They are commonly found in 3 forms, starches, sugars, or fibers. All of them are made of sugar molecules that are linked together like a chain. Foods that are high in Carbohydrates are easy to digest. Good sources of carbohydrates are red beans, fruits, and vegetables
4-You need a certain amount of fat in your diet and on your body to stay healthy. Fats, also called lipids, provide energy and help your body absorb vitamins. They are a major part of cell membranes. Body fat helps to insulate against cold temperatures. Most people get plenty of fat in their diet, so deficiencies in fats are rare. But too much fat in your diet can lead to health problems. Most of the fats in your diet should come from unsaturated fats. Examples of unsaturated fats are fish, nuts, vegetable oils, and avocados
5-In addition to vitamins, you also need minerals. Minerals are inorganic nutrients, nutrients that do not contain carbon, that help the body regulate many chemical reactions. You can also get mineral deficiency if you do not consume enough of certain minerals.
6-Vitamin B2-Milk, meats, and veggies-For energy
Vit C-oranges, tomatoes, broccoli, cabbage-growth and repair of body tissues.
Vit A-carrots, milk, sweet potatoes, and broccoli-helps night vision and maintain healthy skin and bones.
7-large, complex molecules that play many critical roles in the body. They do most of the work in cells and are required for the structure, function, and regulation of the body's tissues and organs
8-Enzymes are proteins that help break down larger molecules into smaller molecules. Enzymes also speed up or catalyze the rate of chemical reactions. Without enzymes some chemical reactions would be too slow or wouldn't occur at all.
there are many types of enzymes. Each one is specialized to help break down a specific molecule at a specific location in the body.
9-the involuntary constriction and relaxation of the muscles of the intestine or another canal, creating wave-like movements that push the contents of the canal forward.
10-general term referring to the separation and throwing off of waste materials or toxic substances from the cells and tissues of a plant or animal. The separation, elaboration, and elimination of certain products arising from cellular functions in multicellular organisms is called secretion.
11- When blood is filtered, a fluid called urine is produced.
Hoped this helped :-)
