options:
a) noninvasive
b) precise
c) inexpensive
d) easy
Answer:b) precise
Explanation: BMI(BODY MASS INDEX) is a very vital measurement tool for evaluating and the determining the level of Obesity of overweight of a person.
Body mass index is noninvasive, it is inexpensive and easy way of knowing how well the body weight and height is related to a person's well being.
It is calculated as follows; WEIGHT(KILOGRAMS)/SQUARE OF THE HEIGHT(METERS)
The right answer is polarity.
In chemistry, polarity is a characteristic describing the distribution of negative and positive charges in a dipole. The polarity of a bond or a molecule is due to the difference in electronegativity between the chemical elements that compose it, the differences in charge that it induces, and to their distribution in space. The more the charges are distributed asymmetrically, the more a bond or molecule will be polar, and conversely, if the charges are distributed in a completely symmetrical manner, it will be apolar, that is to say non-polar.
Polarity and its consequences (van der Waals forces, hydrogen bonding) affect a number of physical characteristics (surface tension, melting point, boiling point, solubility) or chemical (reactivity).
Many very common molecules are polar, such as sucrose, a common form of sugar. The sugars, in general, have many oxygen-hydrogen bonds (hydroxyl group -OH) and are generally very polar. Water is another example of a polar molecule, which allows polar molecules to be generally soluble in water. Two polar substances are very soluble between them as well as between two apolar molecules thanks to Van der Waals interactions.
Answer:
Hormones are substances produced by glands (or organs) that regulate bodily functions and behavior. Steroid hormones are one type that are chemically similar to each other, but may have different biological functions. For example, the adrenal glands produce an anti-inflammatory steroid similar to cortisone.
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