Answer the following question given this paragraph: There are only about 6200 known species of amphibians. They are placed in three orders: frogs, salamanders, and caecilians. Table below shows a picture of an amphibian in each order. It also provides additional information about the orders. Q: What are the 3 orders of amphibians? Choices: - bees, caddisflies, antilions - monotremata, artiodactyla, rodentia - hagfish, lampreys, acanthodii - frogs, salamanders, caecilians A:
frogs, salamanders, caecilians
Answer the following question given this paragraph: Q: What do some animals use for shelter? Choices: - invisible materials - indestructible materials - living materials - nonliving materials A:
nonliving materials
Q: Answer the following question given this paragraph: Aggressive behavior often occurs when individuals compete for the same resources. Animals may compete for territory, water, food, or mates. There are two basic types of competition: intraspecific and interspecific. Q: What are the two basic types of competition called? Choices: - exploitative and beneficial - weak and strong - interference and interaction - instraspecifc and interspecific A:
A: instraspecifc and interspecific
Question: Answer the following question given this paragraph: Liquids with strong intermolecular forces have higher surface tensions than liquids with weaker forces. Q: Liquids with strong intermolecular forces have higher what than liquids with weaker forces? Choices: - temperature - melting point - freezing point - surface tension A:
Answer: surface tension
*Question*
Answer the following question given this paragraph: Another barrier is the saliva in the mouth, which is rich in lysozymean enzyme that destroys bacteria by digesting their cell walls. The acidic environment of the stomach, which is fatal to many pathogens, is also a barrier. Additionally, the mucus layer of the gastrointestinal tract, respiratory tract, reproductive tract, eyes, ears, and nose traps both microbes and debris, and facilitates their removal. In the case of the upper respiratory tract, ciliated epithelial cells move potentially contaminated mucus upwards to the mouth, where it is then swallowed into the digestive tract, ending up in the harsh acidic environment of the stomach. Considering how often you breathe compared to how often you eat or perform other activities that expose you to pathogens, it is not surprising that multiple barrier mechanisms have evolved to work in concert to protect this vital area. Q: How does lysozyme destroy bacteria? Choices: - by antibiotic use - by eating them - by paralyzing them - by digesting their cell walls A:
**Answer**
by digesting their cell walls
*Question*
Answer the following question given this paragraph: Sure we can! If you've ever flown on a jet airplane, you've been in the stratosphere. Airplanes fly in the stratosphere, because there is less friction. They get better gas mileage and so costs are lower. There is also less turbulence, so passengers are happier. Can you identify the bottom of the stratosphere in the photo? It's where the clouds begin. Remember that all weather is in the troposphere. Q: Planes fly in what layer of the atmosphere because there is less friction and turbulence? Choices: - mesosphere - ozone layer - crust - stratosphere A:
**Answer**
stratosphere