Q: In birds, lightweight air-filled bones and a large four-chambered heart are examples of adaptations for what purpose? Read this paragraph and choose the correct option from the provided answers: Birds are endothermic tetrapod vertebrates. They are bipedal and have wings and feathers. Their organ systems are adapted for flight. For example, they have light-weight air-filled bones and a large four-chambered heart. Birds also have relatively large brains and a high level of intelligence. Choices: - speed - long lifespan - mating - flight A:
flight

Q: What term describes a wave in which particles of the medium vibrate at right angles, or perpendicular, to the direction that the wave travels? Read this paragraph and choose the correct option from the provided answers: A transverse wave is a wave in which particles of the medium vibrate at right angles, or perpendicular, to the direction that the wave travels. Another example of a transverse wave is the wave that passes through a rope with you shake one end of the rope up and down, as in the Figure below . The direction of the wave is down the length of the rope away from the hand. The rope itself moves up and down as the wave passes through it. You can watch a video of a transverse wave in a rope at this URL: http://www. youtube. com/watch?v=TZIr9mpERbU . Choices: - drainage wave - symmetrical wave - stimulation wave - transverse wave A:
transverse wave

Q: What fluid is most prevalent in your body? Read this paragraph and choose the correct option from the provided answers: Reporting Scientific Work Whether scientific research is basic science or applied science, scientists must share their findings for other researchers to expand and build upon their discoveries. Communication and collaboration within and between sub disciplines of science are key to the advancement of knowledge in science. For this reason, an important aspect of a scientist's work is disseminating results and communicating with peers. Scientists can share results by presenting them at a scientific meeting or conference, but this approach can reach only the limited few who are present. Instead, most scientists present their results in peer-reviewed articles that are published in scientific journals. Peer-reviewed articles are scientific papers that are reviewed, usually anonymously by a scientist's colleagues, or peers. These colleagues are qualified individuals, often experts in the same research area, who judge whether or not the scientist's work is suitable for publication. The process of peer review helps to ensure that the research described in a scientific paper or grant proposal is original, significant, logical, and thorough. Grant proposals, which are requests for research funding, are also subject to peer review. Scientists publish their work so other scientists can reproduce their experiments under similar or different conditions to expand on the findings. The experimental results must be consistent with the findings of other scientists. There are many journals and the popular press that do not use a peer-review system. A large number of online openaccess journals, journals with articles available without cost, are now available many of which use rigorous peer-review systems, but some of which do not. Results of any studies published in these forums without peer review are not reliable and should not form the basis for other scientific work. In one exception, journals may allow a researcher to cite a personal communication from another researcher about unpublished results with the cited author's permission. Choices: - cold - liquid - Coolant - water A:
water

Q: Which species in class insecta has three body segments, six jointed legs, and multiple head appendages? Read this paragraph and choose the correct option from the provided answers: arthropod in Class Insecta that has three body segments, six jointed legs, and multiple head appendages. Choices: - mollusc - sauropod - arachnid - arthropod A:
arthropod