Ques:Q: What type of symmetry do echinoderms show? Read this paragraph and choose the correct option from the provided answers: As mentioned earlier, echinoderms show radial symmetry. Other key echinoderm features include an internal skeleton and spines, as well as a few organs and organ systems. Although echinoderms look like they have a hard exterior, they do not have an external skeleton. Instead, a thin outer skin covers an internal skeleton made of tiny plates and spines. This provides rigid support. Some groups of echinoderms, such as sea urchins ( Figure below ), have spines that protect the organism. Sea cucumbers use these spines to help them move. Choices: - mirrored - lateral - parallel - radial A:

Ans:radial
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Ques:Q: What kind of reaction is a reaction in which two or more substances combine to form a single new substance? Read this paragraph and choose the correct option from the provided answers: A combination reaction is a reaction in which two or more substances combine to form a single new substance. Combination reactions can also be called synthesis reactions. The general form of a combination reaction is:. Choices: - power reaction - compounding reaction - chemical reaction - combination reaction A:

Ans:combination reaction
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Ques:Q: Ecologists already use the abilities of many prokaryotes to carry out bioremediation of soils and what else? Read this paragraph and choose the correct option from the provided answers: Choices: - air - gas - plasma - water A:

Ans:water
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Ques:Q: What is the measure of an individual's weight-to-height ratio called? Read this paragraph and choose the correct option from the provided answers: Metabolism and Obesity Obesity in the United States is epidemic. The rate of obesity has been steadily rising since the 1980s. In the 1990s, most states reported that less than 10 percent of their populations was obese, and the state with the highest rate reported that only 15 percent of their population was considered obese. By 2010, the U. Centers for Disease Control and Prevention reported that nearly 36 percent of adults over 20 years old were obese and an additional 33 percent were overweight, leaving only about 30 percent of the population at a healthy weight. These studies find the highest levels of obesity are concentrated in the southern states. They also find the level of childhood obesity is rising. Obesity is defined by the body mass index (BMI), which is a measure of an individual's weight-to-height ratio. The normal, or healthy, BMI range is between 18 and 24.9 kg/m2. Overweight is defined as a BMI of 25 to 29.9 kg/m2, and obesity is considered to be a BMI greater than 30 kg/m2. Obesity can arise from a number of factors, including overeating, poor diet, sedentary lifestyle, limited sleep, genetic factors, and even diseases or drugs. Severe obesity (morbid obesity) or long-term obesity can result in serious medical conditions, including coronary heart disease; type 2 diabetes; endometrial, breast, or colon cancer; hypertension (high blood pressure); dyslipidemia (high cholesterol or elevated triglycerides); stroke; liver disease; gall bladder disease; sleep apnea or respiratory diseases; osteoarthritis; and infertility. Research has shown that losing weight can help reduce or reverse the complications associated with these conditions. Choices: - body density index (bdi) - body matter index (bmi) - density index (di) - body mass index (bmi) A:

Ans:
body mass index (bmi)
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