Answer the following question given this paragraph: Echinoderms are marine organisms that make up the phylum Echinodermata. They can be found in the ocean from the equator to the poles. There are roughly 6000 living species of echinoderms. They are among the most distinctive organisms within the animal kingdom. Members of the phylum include sea stars (starfish), sand dollars, and feather stars, shown in Figure below . See "Different But Equal" at http://www. pbs. org/kcet/shapeoflife/episodes/ultimate. html for an introduction to echinoderms. Q: Echinoderms have what type of body symmetry? Choices: - Translational symmetry - Rotational symmetry - Reflectional symmetry - radial symmetry A:
radial symmetry
(Question)
Answer the following question given this paragraph: In summary, aerobic and anaerobic respiration each have advantages under specific conditions. Aerobic respiration produces far more ATP, but risks exposure to oxygen toxicity. Anaerobic respiration is less energy-efficient, but allows survival in habitats which lack oxygen. Within the human body, both are important to muscle function. Muscle cells specialized for aerobic respiration provide endurance, and those specialized for lactic acid fermentation support short but intense energy expenditures. Both ways of making ATP play critical roles in life on earth. Q: What exposure risk comes with aerobic respiration? Choices: - helium toxicity - carbon toxicity - nitrogen toxicity - oxygen toxicity A:
(Answer)
oxygen toxicity
Ques: Answer the following question given this paragraph: Q: What three forces are involved in erosion? Choices: - water, temperature, altitude - heat, pressure, gravity - radiation, gravity, precipitation - water, wind, gravity A:
Ans: water, wind, gravity
(Q).
Answer the following question given this paragraph: An aqueous solution is a homogeneous mixture in which the most abundant component is water. The other substance(s) are typically introduced in a solid or liquid form and mixed into the water until they are evenly distributed. For example, if we placed a sample of ethanol in water and mixed it homogeneously, we would have a solution. Table salt mixed with water is another example of a solution. More generally, a solution is a homogeneous mixture. The solution component that is present in the largest amount is called the solvent , and all other substances are referred to as solutes . In aqueous solutions, water is always the solvent. Q: An aqueous solution is a homogeneous mixture in which the most abundant component is what? Choices: - air - oxygen - blood - water A:
(A).
water
Ques:Answer the following question given this paragraph: The sample in an experiment or other investigation consists of the individuals or events that are studied. Typically, the sample is much smaller than all such individuals or events that exist in the world. Whether the results based on the sample are true in general cannot be known for certain. However, the larger the sample is, the more likely it is that the results are generally true. Similarly, the more times that an experiment is repeated and the same results obtained, the more likely the results are valid. This is why scientific experiments should always be repeated. Q: What part of an experiment or other investigation consists of the individuals or events that are studied? Choices: - hypothesis - experimental control - independent variable - sample A:

Ans:sample
Answer the following question given this paragraph: Type 1 diabetes occurs when the immune system attacks normal cells of the pancreas. Since the cells in the pancreas are damaged, the pancreas cannot make insulin. Type 1 diabetes usually develops in childhood or adolescence. Q: Type 1 diabetes results in the pancreas not being able to make what ? Choices: - hemoglobin - sugar - glucose - insulin A:
insulin