Q: Density and pressure of air decreases with what? Read this paragraph and choose the correct option from the provided answers: Like density, the pressure of the air decreases with altitude. There is less air pressing down from above the higher up you go. Look at the bottle in Figure below . It was drained by a hiker at the top of a mountain. Then the hiker screwed the cap on the bottle and carried it down to sea level. At the lower altitude, air pressure crushed it. Can you explain why?. Choices: - temperature - humidity - horizontal distance - altitude A:
altitude

Q: What is the force that pulls particles at the exposed surface of a liquid toward other liquid particles called? Read this paragraph and choose the correct option from the provided answers: Two unique properties of liquids are surface tension and viscosity. Surface tension is a force that pulls particles at the exposed surface of a liquid toward other liquid particles. Surface tension explains why water forms droplets, like the water droplet that has formed on the leaky faucet pictured in the Figure below . You can learn more about surface tension at this URL: http://io9. com/5668221/an-experiment-with-soap-water-pepper-and-surface-tension . Choices: - conservative tension - shinking tension - transfer tension - surface tension A:
surface tension

Q: Snakes use what anatomical structure to smell scents in the air? Read this paragraph and choose the correct option from the provided answers: Most reptiles have good eyesight and a keen sense of smell. Snakes smell scents in the air using their forked tongue (see Figure below ). This helps them locate prey. Some snakes have heat-sensing organs on their head that help them find endothermic prey, such as small mammals and birds. Staring into the Beautiful Cold-Blooded Eyes of Reptiles at http://www. environmentalgraffiti. com/news-reptile-eyes is a pictorial display of numerous reptile eyes. Choices: - forked tails - branched tongue - forked eyes - forked tongue A:
forked tongue

Q: What includes all living things within all their environments, including everywhere life exists, from the upper atmosphere, to the top of the soil, to ocean bottoms? Read this paragraph and choose the correct option from the provided answers: The biosphere includes all living things within all of their environments. It includes every part of the environment where life exists, from the upper reaches of the atmosphere to the top few meters of soil, to the bottoms of the oceans. An ecosystem is made up of the relationships among smaller groups of organisms with each other, and with their environment. Scientists often speak of the interrelatedness of living things, because, according to evolutionary theory, organisms adapt to their environment, and they must also adapt to other organisms in that environment. Choices: - biome - community - habitat - biosphere A:
biosphere