*Question*
Answer the following question given this paragraph: Animals such as bats and dolphins send out ultrasound waves and use their echoes, or reflected waves, to identify the locations of objects they cannot see. This is called echolocation. Animals use echolocation to find prey and avoid running into objects in the dark. You can see in the Figure below and also at the following URL how a bat uses echolocation to find insect prey. http://www. bsos. umd. edu/psyc/batlab/headaimmovies/nsf_challenge/nsf4. wmv. Q: What is the term for the method of sending out ultrasound waves to determine the locations of objects? Choices: - catabolism - magnetism - morphology - echolocation A:
**Answer**
echolocation

*Question*
Answer the following question given this paragraph: The biogeochemical cycle that recycles water is the water cycle. The water cycle involves a series of interconnected pathways involving both the biotic and abiotic components of the biosphere. Water is obviously an extremely important aspect of every ecosystem. Life cannot exist without water. Many organisms contain a large amount of water in their bodies, and many live in water, so the water cycle is essential to life on Earth. Water continuously moves between living organisms, such as plants, and non-living things, such as clouds, rivers, and oceans ( Figure below ). Q: What is the biogeochemical cycle that recycles water called? Choices: - water theory - Liquid Cycle - Water Table - water cycle A:
**Answer**
water cycle

*Question*
Answer the following question given this paragraph: Water on Mars can't be a liquid. This is because the pressure of the atmosphere is too low. The planet does have a lot of water; it is in the form of ice. The south pole of Mars has a very visible ice cap. Scientists also have evidence that there is also a lot of ice just under the Martian surface. The ice melts when volcanoes erupt. At this times liquid water flows across the surface. Q: What form does water take on the planet mars? Choices: - plasma - gas - liquid - ice A:
**Answer**
ice

*Question*
Answer the following question given this paragraph: The human species has been incredibly successful. In a relatively short period of time, it has colonized almost all of Earth's terrestrial habitats. Unfortunately, human beings have also impacted Earth, its climate, and its environment. Human actions threaten Earth's valuable biodiversity. Q: What incredibly successful species has quickly colonized almost all of earth's terrestrial habitats, but also impacted earth, its climate, and its environment? Choices: - chimpanzees - birds - fish - humans A:
**Answer**
humans