Questions | 5 |
Topics | Compound, Conduction, Genetic Type, Health Benefits of Vitamins & Minerals, Water Cycle |
A compound is a substance containing two or more different chemical elements bound together by a chemical bond. In covalent compounds, electrons are shared between atoms. In ionic compounds, one atom borrows an electron from another atom resulting in two ions (electrically charged atoms) of opposite polarities that then become bonded electrostatically.
Heat is always transferred from warmer to cooler environments and conduction is the simplest way this transfer can occur. It is accomplished through direct contact between materials and materials like metals that transfer heat efficiently are called conductors while those that conduct heat poorly, such as plastic, are called insulators.
A person's genotype is their genetic makeup and includes both dominant and recessive alleles. Phenotype is how the genes express themselves in physical characteristics.
Vitamin / Mineral | Sources | Health Benefits |
---|---|---|
Calcium | Dairy products (milk, yogurt, cheese), spinach. | Aids bone growth and repair, muscle function. |
Iron | Red meat, beans, whole grains. | Allows red blood cells to transfer oxygen to body tissues. |
Magnesium | Nuts, whole grains, green leafy vegetables. | Muscle, nerve, and enzyme function. |
Potassium | Bananas, nuts, seeds. | Helps balance fluid levels in the body. |
Vitamin A | Liver, milk, eggs, carrots. | Vision, immune system, cell growth. |
Vitamin C | Green and red peppers, citrus fruits, broccoli. | Collagen formation, immune system function, antioxidant (helps protect cells from damage). |
Vitamin D | Exposure to sunlight. | Helps calcium strengthen bones, muscle, nerve, and immune system function. |
The water (hydrologic) cycle describes the movement of water from Earth through the atmosphere and back to Earth. The cycle starts when water evaporates into a gas from bodies of water like rivers, lakes and oceans or transpirates from the leaves of plants.