Why Is bias a problem? Bias can damage research, if the researcher chooses to allow his bias to distort the measurements and observations or their interpretation. When faculty are biased about individual students in their courses, they may grade some students more or less favorably than others, which is not fair to any of the […]

Which factor decreases the rate of a chemical reaction? In general, a factor that increases the number of collisions between particles will increase the reaction rate and a factor that decreases the number of collisions between particles will decrease the chemical reaction rate. How does an inhibitor decreases the rate of a chemical reaction? Explanation: […]

How many years until the rainforest is gone? In just 40 years, possibly 1bn hectares, the equivalent of Europe, has gone. Half the world’s rainforests have been razed in a century, and the latest satellite analysis shows that in the last 15 years new hotspots have emerged from Cambodia to Liberia. At current rates, they […]

How many POWS are still in Vietnam? Current Status of Unaccounted-for Americans Lost in the Vietnam War Vietnam Total Original Missing 1,973 2,646 Repatriated and Identified 728 1,061[1] Remaining Missing 1,245 1,585 Why was it hard to fight in Vietnam? The war in Vietnam was difficult to fight due to the fact that the terrain […]

What biomes are found in the temperate zone? Temperate biomes include forests, grasslands, and chaparral. What type of biome is a temperate forest? The temperate deciduous forest is a biome that is always changing. It has four distinct seasons: winter, spring, summer and fall. Winters are cold and summers are warm. Temperate deciduous forests get […]

Why is it recommended that older adults get their vitamin B12 from fortified foods and supplements? Vitamin B-12 plays a role in red blood cell formation, cell metabolism, nerve function and bone health. A deficiency of vitamin B-12 can be associated with tingling or prickly feelings in legs or hands, difficulty walking, forgetfulness, changes in […]

What are the two types of stress test? There are three main types of stress tests: exercise stress tests, nuclear stress tests, and stress echocardiograms. All types of stress tests may be done in a health care provider’s office, outpatient clinic, or hospital. What is the most commonly used stress test protocol? Blood pressure and […]

Why do lipids and proteins have different functions? The large diversity in lipid structures allows for a broad spectrum of chemical and physical properties for the membrane bilayer that affects protein function and organization. Determination at atomic resolution of the structure of a few membrane proteins has shown specific lipid species in association with proteins. […]

What is a common source of groundwater pollution? Groundwater contamination occurs when man-made products such as gasoline, oil, road salts and chemicals get into the groundwater and cause it to become unsafe and unfit for human use. Materials from the land’s surface can move through the soil and end up in the groundwater. What are […]

Which part of the plant is responsible for absorbing water? root hairs What absorbs water and nutrients in plants? Water is absorbed through the root hairs and moves up the xylem to the leaves. Since plants require nutrients in the form of elements such as carbon and potassium, it is important to understand the chemical […]