For exampe if it is 12:45 AM, then after 8 hours the time is  12 hrs 45 min + 8 hrs = 8 : 45 PM in the night on the same day.

The air around us is a mixture of gases, mainly nitrogen and oxygen, but containing much smaller amounts of water and other gases. Earth's atmosphere is composed of many gases. Their percentages by volume is given by::  78% Nitrogen, 21% Oxygen, 0.9% Argon, and 0.03% Carbon dioxide  And very small percentages of other elements.

Answer: C) Both A & B Explanation: Covalent bonds hold atoms together because the attraction between the positively charged nuclei and the negatively charged shared electrons is greater than the repulsions between the nuclei themselves.

Answer: B) Boogie - Woogie Explanation: Pine Top Smith (1899-1929) Considered to be the originator of the Boogie -Woogie style of piano playing.

Answer: A) Financial aid is available to community college students. Explanation:

Any two amino acids vary structure by the r-group, otherwise all amino acids are in the same structure. All amino acids have in common carboxyl group -COO , amino group -NH3+ and a hydrogen -H and a r-group which are all bonded to a central carbon.

A computer system consists of two major elements: hardware and software. Computer hardware is the collection of all the parts you can physically touch. Computer software, on the other hand, is not something you can touch. Software is a set of instructions for a computer to perform specific operations. You need both hardware and software for a computer system to work. 10 examples of computer hardware are :: 1. Monitor 2. Motherboard 3. CPU(Microprocessor)  4. Main memory(RAM) 5. Expansion cards  6. Power supply unit 7. Optical disc drive  8. Hard disk drive (HDD) 9. Keyboard 10. Mouse

Answer: D) All of the above Explanation: All the three statements lead to either increase in demand of goods and services or decrease in the supply. This leads to increase in general level of prices.