Answer the following question given this paragraph: An ionic bond forms when the metal sodium gives up an electron to the nonmetal chlorine. Q: What forms when the metal sodium gives up an electron to the nonmetal chlorine? Choices: - covalent bond - van der waals force - hydrogen bond - an ionic bond A:
an ionic bond
(Question)
Answer the following question given this paragraph: Ozone near the ground harms human health. But the ozone layer in the stratosphere protects us from solar rays. That's why people were alarmed in the 1980s to learn that there was a hole in the ozone layer. Q: What does ozone in the stratosphere protect us from? Choices: - comets - acid rain - solar traces - solar rays A:
(Answer)
solar rays
Ques: Answer the following question given this paragraph: Shortly after eating, there is a surplus of glucose in the body. Some of it will be used immediately, but the rest is stored in the form of glycogen. Between meals, when the level of glucose in the blood drops below a certain point, a signal is sent to the liver that says "make more glucose. " In response, the glycogen in the liver is broken down and the resulting glucose is released into the bloodstream. Q: Between meals, when the level of blood glucose drops below a certain point, a signal is sent to what organ saying "make more glucose"? Choices: - pancreas - kidney - brain - liver A:
Ans: liver
(Q).
Answer the following question given this paragraph: work: A force is said to do work when it acts on a body so that there is a displacement of the point of application, however small, in the direction of the force. Thus a force does work when it results in movement. The work done by a constant force of magnitude on a point that moves a distance in the direction of the force is the product, . Q: What results when a force does work? Choices: - side effect - momentum - pressure - movement A:
(A).
movement
Ques:Answer the following question given this paragraph: H0 = 20km/s Mly. Explanations of the large-scale characteristics of the universe are intimately tied to particle physics. The dominance of matter over antimatter and the smoothness of the CMBR are two characteristics that are tied to particle physics. The epochs of the universe are known back to very shortly after the Big Bang, based on known laws of physics. The earliest epochs are tied to the unification of forces, with the electroweak epoch being partially understood, the GUT epoch being speculative, and the TOE epoch being highly speculative since it involves an unknown single superforce. The transition from GUT to electroweak is called spontaneous symmetry breaking. It released energy that caused the inflationary scenario, which in turn explains the smoothness of the CMBR. Q: The epochs of the universe are known back to very shortly after what 'explosive' event? Choices: - Biggest bang - Explosive bang - major bang - big bang A:

Ans:big bang
Answer the following question given this paragraph: Evolution occurs by natural selection, the process by which organisms with traits that better enable them to adapt to their environment will tend to survive and reproduce in greater numbers. Evolution is due to differences in the survival and reproduction of individuals within a population. Q: What is the process that allows organisms with better traits to survive and produce? Choices: - spontaneous mutation - adaptation - succession - natural selection A:
natural selection