Q: Answer the following question given this paragraph: Lignin is a tough carbohydrate molecule that is hydrophobic ("water fearing"). It adds support to vascular tissues in stems. It also waterproofs the tissues so they don't leak, which makes them more efficient at transporting fluids. Because most other organisms cannot break down lignin, it helps protect plants from herbivores and parasites. Q: Things that are hydrophobic repel or otherwise don't really mix with what? A:

OPTIONS:
- air
- magnets
- heat
- water

A: water

input: OPTIONS:
- lexapoda
- trichina
- xerophyte
- hexapoda Now, answer this question: Answer the following question given this paragraph: Insects are arthropods in the class Hexapoda. They are the most numerous organisms in the world. Most are terrestrial, and many are aerial. Insects have six legs and a pair of antennae for sensing chemicals. They also have several eyes and specialized mouthparts for feeding. Insects are the only invertebrates that can fly. Flight is the main reason for their success. Insects may live in large colonies and have complex social behaviors. Insects spread disease and destroy crops. However, they are essential for pollinating flowering plants. Q: Insects are arthropods in which class? A:
A:
output: hexapoda

Answer the following question given this paragraph: Osteoarthritis occurs when the cartilage at the ends of the bones breaks down. The break down of the cartilage leads to pain and stiffness in the joint. Decreased movement of the joint because of the pain may lead to weakening of the muscles that normally move the joint, and the ligaments surrounding the joint may become loose. Osteoarthritis is the most common form of arthritis . It has many contributing factors, including aging, sport injuries, fractures, and obesity. Q: What occurs when the cartilage at the ends of the bones breaks down? A:

OPTIONS:
- stress fracture
- rheumatism
- osteoporosis
- osteoarthritis

Answer: osteoarthritis

Problem: OPTIONS:
- biome level
- habitat level
- pH level
- trophic level
Q: Answer the following question given this paragraph: There is a one problem when using food chains to accurately describe most ecosystems. Even when all organisms are grouped into appropriate trophic levels, some of these organisms can feed on species from more than one trophic level; likewise, some of these organisms can be eaten by species from multiple trophic levels. In other words, the linear model of ecosystems, the food chain, is not completely descriptive of ecosystem structure. A holistic modelwhich accounts for all the interactions between different species and their complex interconnected relationships with each other and with the environmentis a more accurate and descriptive model for ecosystems. A food web is a graphic representation of a holistic, non-linear web of primary producers, primary consumers, and higher-level consumers used to describe ecosystem structure and dynamics (Figure 46.6). Q: A problem with using food chains to describe ecosystems is that some organisms can feed on or be consumed by species from more than one of what level? A:
Answer: trophic level

Problem:OPTIONS:
- plastic rain
- morning rain
- stored rain
- acid rain

Answer the following question given this paragraph: A: Acid rain dissolves and damages stone buildings and statues. The Figure below shows a statue that has been damaged by acid rain. Q: What type of rain dissolves and damages stone buildings and statues? A:
****
A: acid rain

Problem:OPTIONS:
- forests
- fossils
- gas
- hydrocarbons

Answer the following question given this paragraph: It is hard to overstate the importance of hydrocarbons to modern life. Hydrocarbons have even been called the driving force of western civilization. You saw some ways they are used in Figure above . Several other ways are illustrated in Figure below . Their most important use is as fuels. Gasoline, natural gas, fuel oil, diesel fuel, jet fuel, coal, kerosene, and propane are just some of the hydrocarbon compounds that are burned for fuel. Hydrocarbons are also used to manufacture many products, including plastics and synthetic fabrics such as polyester. Q: What compounds, which serve as fuels and are used in manufacturing, are called the driving force of western civilization? A:
****
A:
hydrocarbons