*Question*
Answer the following question given this paragraph: Polyester molecules make excellent fibers and are used in many fabrics. A knitted polyester tube, which is biologically inert, can be used in surgery to repair or replace diseased sections of blood vessels. PET is used to make bottles for soda pop and other beverages. It is also formed into films called Mylar. When magnetically coated, Mylar tape is used in audio- and videocassettes. Synthetic arteries can be made from PET, polytetrafluoroethylene, and other polymers. Q: What is the name of film that polyester fibers form? Choices: - layers - fabric - Softness - mylar A:
**Answer**
mylar

*Question*
Answer the following question given this paragraph: The oxygen atoms, however, form oxygen gas, which is a waste product of photosynthesis. The oxygen given off supplies most of the oxygen in our atmosphere. Before photosynthesis evolved, Earth's atmosphere lacked oxygen altogether, and this highly reactive gas was toxic to the many organisms living at the time. Something had to change! Most contemporary organisms rely on oxygen for efficient respiration. So plants don't just "restore" the air, they also had a major role in creating it!. Q: Plants not only contribute food but what else for organisms? Choices: - dioxide - hydrogen - carbon - oxygen A:
**Answer**
oxygen

*Question*
Answer the following question given this paragraph: An electric generator is a device that changes kinetic energy to electrical energy through electromagnetic induction. Electromagnetic induction is the process of generating electric current with a magnetic field. It occurs when a magnetic field and an electric conductor, such as a coil of wire, move relative to one another. Q: What device changes kinetic energy to electrical energy through electromagnetic induction? Choices: - due generator - Emission generator - real generator - electric generator A:
**Answer**
electric generator

*Question*
Answer the following question given this paragraph: Many animal behaviors occur in repeated cycles. Migration and hibernation are examples of behaviors with annual cycles. Sleeping and waking are examples of behaviors with daily cycles. Q: Migration and hibernation are examples of behaviors that occur on what temporal basis? Choices: - nocturnal - weekly - daily - annual A:
**Answer**
annual