Answer the following question given this paragraph: Thermoregulatory Adjustments The fetus floats in warm amniotic fluid that is maintained at a temperature of approximately 98.6F with very little fluctuation. Birth exposes newborns to a cooler environment in which they have to regulate their own body temperature. Newborns have a higher ratio of surface area to volume than adults. This means that their body has less volume throughout which to produce heat, and more surface area from which to lose heat. As a result, newborns produce heat more slowly and lose it more quickly. Newborns also have immature musculature that limits their ability to generate heat by shivering. Moreover, their nervous systems are underdeveloped, so they cannot quickly constrict superficial blood vessels in response to cold. They also have little subcutaneous fat for insulation. All these factors make it harder for newborns to maintain their body temperature. Newborns, however, do have a special method for generating heat: nonshivering thermogenesis, which involves the breakdown of brown adipose tissue, or brown fat, which is distributed over the back, chest, and shoulders. Brown fat differs from the more familiar white fat in two ways: It is highly vascularized. This allows for faster delivery of oxygen, which leads to faster cellular respiration. It is packed with a special type of mitochondria that are able to engage in cellular respiration reactions that produce less ATP and more heat than standard cellular respiration reactions. Q: Nonshivering thermogenesis, which involves the breakdown of brown adipose tissue, is a special methods newborns have for what purpose? Choices: - losing heat - harnessing heat - moving heat - generating heat A:
generating heat
(Question)
Answer the following question given this paragraph: Radio waves are electromagnetic waves with the longest wavelengths, lowest frequencies, and least amount of energy. They are used for radio and television broadcasts and many other purposes. Q: What waves do radio and television use? Choices: - sound waves - light waves - gamma waves - radio waves A:
(Answer)
radio waves
Ques: Answer the following question given this paragraph: The organ that we use to hear sound is the ear. Almost all the structures in the ear are needed for this purpose. Together, they gather and amplify sound waves and change their energy to electrical signals. The electrical signals travel to the brain, which interprets them as sound. Q: What organ do we use to hear sound? Choices: - eye - antennae - amplifier - the ear A:
Ans: the ear
(Q).
Answer the following question given this paragraph: Glycolysis is the first stage of cellular respiration. It takes place in the cytoplasm of the cell. The world glycolysis means "glucose splitting". That's exactly what happens in this stage. Enzymes split a molecule of glucose into two smaller molecules called pyruvate. This results in a net gain of two molecules of ATP. Other energy-storing molecules are also produced. (Their energy will be used in stage 3 to make more ATP. ) Glycolysis does not require oxygen. Anything that doesn't need oxygen is described as anaerobic . Q: What is the first stage of cellular respiration? Choices: - defacation - photosynthesis - breath - glycolysis A:
(A).
glycolysis
Ques:Answer the following question given this paragraph: The winds of a tornado can reach very high speeds. The faster the winds blow, the greater the damage they cause. Wind speed and damage are used to classify tornadoes ( Table below ). Q: How do they classify tornadoes? Choices: - wind density - amount of destruction - wind temperature - wind speed A:

Ans:wind speed
Ques: Answer the following question given this paragraph: Looking at the magnetism of the seafloor, scientists discovered something astonishing. Many times in Earth's history, the magnetic poles have switched positions. North becomes south, and south becomes north! When the north and south poles are aligned as they are now, geologists say it is normal polarity . When they are in the opposite position, they say that it is reversed polarity . Q: What is it called when poles are in opposite positions? Choices: - reversed bonding - polar effect - demagnetization - reversed polarity A:
Ans:
reversed polarity