Answer the following question given this paragraph: Most animals have an exoskeleton, including insects, spiders, scorpions, horseshoe crabs, centipedes, and crustaceans. Scientists estimate that, of insects alone, there are over 30 million species on our planet. The exoskeleton is a hard covering or shell that provides benefits to the animal, such as protection against damage from predators and from water loss (for land animals); it also provides for the attachments of muscles. As the tough and resistant outer cover of an arthropod, the exoskeleton may be constructed of a tough polymer such as chitin and is often biomineralized with materials such as calcium carbonate. This is fused to the animal's epidermis. Ingrowths of the exoskeleton, called apodemes, function as attachment sites for muscles, similar to tendons in more advanced animals (Figure 33.3). In order to grow, the animal must first synthesize a new exoskeleton underneath the old one and then shed or molt the original covering. This limits the animal's ability to grow continually, and may limit the individual's ability to mature if molting does not occur at the proper time. The thickness of the exoskeleton must be increased significantly to accommodate any increase in weight. It is estimated that a doubling of body size increases body weight by a factor of eight. The increasing thickness of the chitin necessary to support this weight limits most animals with an exoskeleton to a relatively small size. The same principles apply to endoskeletons, but they are more efficient because muscles are attached on the outside, making it easier to compensate for increased mass. Q: What is the term for the hard covering that protects insects, crustaceans, and spiders? A:
OPTIONS:
- endoplate
- endoskeleton
- exoplate
- exoskeleton
exoskeleton

Answer the following question given this paragraph: The evolution of life on Earth over the past 4 billion years has resulted in a huge variety of species. For more than 2,000 years, humans have been trying to classify the great diversity of life. The science of classifying organisms is called taxonomy. Classification is an important step in understanding the present diversity and past evolutionary history of life on Earth. Q: What is the science of classifying the many organisms on earth called? A:
OPTIONS:
- general classification
- terminology
- methodology
- taxonomy

Answer: taxonomy

Question: Answer the following question given this paragraph: Lab safety symbols warn of specific hazards, such as flames or broken glass. Knowing the symbols allows you to recognize and avoid the dangers. Q: What should you learn that allows you to recognize and avoid the dangers of specific hazards when experimenting, such as flames or broken glass? A:
OPTIONS:
- available safety symbols
- medical safety symbols
- first aid safety symbols
- lab safety symbols
Answer: lab safety symbols

input with options: Answer the following question given this paragraph: The ideal gas law is used like any other gas law, with attention paid to the unit and making sure that temperature is expressed in Kelvin. However, the ideal gas law does not require a change in the conditions of a gas sample. The ideal gas law implies that if you know any three of the physical properties of a gas, you can calculate the fourth property. Q: The ideal gas law is used like any other gas law, with attention paid to the unit and making sure that temperature is expressed in kelvin. however, the ideal gas law does not require a change in the conditions of a gas sample. the ideal gas law implies that if you know any three of the physical properties of a gas, you can calculate this? A:
OPTIONS:
- second
- third
- unrelated
- fourth
output: fourth

Q: Answer the following question given this paragraph: Wave amplitude is determined by the energy of the disturbance that causes the wave. A wave caused by a disturbance with more energy has greater amplitude. Q: What is determined by the energy of the disturbance that causes the wave? A:

OPTIONS:
- wavelength
- Ohm
- frequency
- wave amplitude

A: wave amplitude

Answer the following question given this paragraph: Radar stands for ra dio d etection and r anging. In police radar, a radar gun sends out short bursts of microwaves. The microwaves reflect back from oncoming vehicles and are detected by a receiver in the radar gun. The frequency of the reflected waves is used to compute the speed of the vehicles. Radar is also used for tracking storms, detecting air traffic, and other purposes. Q: In police radar, a radar gun sends out short bursts of which waves? A:
OPTIONS:
- photons
- soundwaves
- electrodes
- microwaves
microwaves