Please answer this: I can use this background: The general trend in electronegativity is that the value increases from left to right across a row in the periodic table and decreases down a column. The most electronegative element is fluorine, which has a value of 4.0. As discussed in the lesson "Trends in the Periodic Table," electronegativity increases across a row as the number of protons in the nucleus increases and therefore has a stronger pull. Electronegativity decreases down a column due to an increased effect of electron shielding in larger atoms.  Now, I have a new situation: Lena is a grade school student studying the periodic table for homework. She has to choose two elements from the table and write a couple paragraphs about them and their characteristics. She takes two darts and throws them at the periodic table to decide which ones to use. The darts land on Zerpine and Dradane. Zerpine may be further down the table than Dradane, but they are both in the same column.  Answer this question please: Which element has less electron shielding?
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Answer: Dradane


Please answer this: I can use this background: New species develop naturally through the process of natural selection . Due to natural selection, organisms with traits that better enable them to adapt to their environment will tend to survive and reproduce in greater numbers. Natural selection causes beneficial heritable traits to become more common in a population and unfavorable heritable traits to become less common. For example, a giraffe’s neck is beneficial because it allows the giraffe to reach leaves high in trees. Natural selection caused this beneficial trait to become more common than short necks.  Now, I have a new situation: A biologist was in Australia making observations about the local species when he identified two distinct groups of butterflies. He found that one group of butterflies, group A, blended in with the dark oak trees that were common in the area. Butterflies in the other group, group B, however did not blend in as well and could easily be spotted by predators whenever they landed on the oak trees.  Answer this question please: Which group of butterflies will reproduce more often?
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Answer: group A


Please answer this: I can use this background: Any unused energy in food, whether it comes from carbohydrates, proteins, or lipids, is stored in the body as fat. An extra 3,500 Calories of energy results in the storage of almost half a kilogram (1 pound) of stored body fat. People who consistently consume more food energy then they need may become obese. Obesity occurs when the body mass index is 30.0 kg/m 2 or greater. Body mass index (BMI) is an estimate of the fat content of the body. It is calculated by dividing a person’s weight (in kilograms) by the square of the person’s height (in meters). Obesity increases the risk of health problems such as type 2 diabetes and hypertension.  Now, I have a new situation: John is a physician in the local hospital. Today, he is seeing two patients, patient A and patient B. John determines that patient A is obese, and patient B is not obese. He needs to prescribe medicine according to his findings.  Answer this question please: Which patient would more likely consume more food than needed, patient A or patient B?
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Answer:
patient A