Answer the following question given this paragraph: Most natural gas comes from the wells that produce petroleum. An increasing amount comes from a new method. Hydraulic fracturing, called fracking , is very much in the news lately. Fracking makes it easier and quicker to get natural gas from the rock ( Figure below ). Q: Where does most natural gas come from? Choices: - recycled cooking oil - oceans - alchemy - wells that produce petroleum A:
wells that produce petroleum
Answer the following question given this paragraph: An ion is an atom or group of bonded atoms that has a positive or negative charge. Ions are formed when an atom gains or loses electrons from its valence shell ( Figure below ). This process causes an imbalance between the number of positively charged protons and negatively charged electrons, so the overall ion will carry a net positive or negative charge. Q: What is an atom or group of bonded atoms that has a positive or negative charge? Choices: - an photon - an electron - a neutron - an ion A:
an ion
Q: Answer the following question given this paragraph: Voltmeters measure the voltage drop across a resistor. Q: What do voltmeters measure? Choices: - current increase across a resistor - voltage increase across a resistor - current drop across a resistor - voltage drop across a resistor A:
A: voltage drop across a resistor
Question: Answer the following question given this paragraph: Veins are blood vessels that carry blood toward the heart. This blood is no longer under much pressure, so many veins have valves that prevent backflow of blood. Veins generally carry deoxygenated blood. The largest vein is the inferior vena cava, which carries blood from the lower body to the heart. Q: Veins are blood vessels that carry blood toward what? Choices: - extremities - lung - brain - heart A:
Answer: heart
*Question*
Answer the following question given this paragraph: When homologous chromosomes form pairs during prophase I of meiosis I, crossing-over can occur. Crossing-over is the exchange of genetic material between non-sister chromatids of homologous chromosomes. It results in new combinations of genes on each chromosome. Q: When do homologous chromosomes form pairs? Choices: - mitosis - metathesis - transcripton - meiosis A:
**Answer**
meiosis
(Question)
Answer the following question given this paragraph: An air mass is a large body of air that has about the same conditions throughout. For example, an air mass might have cold dry air. Another air mass might have warm moist air. The conditions in an air mass depend on where the air mass formed. Q: What is the term used for a large body of air of the same temperature and moisture conditions? Choices: - air group - sky mass - air pool - air mass A:
(Answer)
air mass