user: Answer the following question given this paragraph:   Only a very small percentage of Earth’s water is fresh, liquid water on the surface. But that tiny fraction of water is vital. It is needed by humans, plants, and many other living things. Liquid freshwater flows over Earth’s surface in streams and rivers. It also forms ponds, lakes, and wetlands. People use freshwater for drinking, washing, and industry. They also use it for fun. How do you use freshwater for fun?.   Q: Only a small percent of earth's water is what type, as opposed to saltwater?   Choices:  - runoff  - groundwater  - rainwater  - fresh  A:
fresh


Answer the following question given this paragraph:   Darwin thought that evolution occurs gradually. This model of evolution is called gradualism. The fossil record better supports the model of punctuated equilibrium. In this model, long periods of little change are interrupted by bursts of rapid change.   Q: Did darwin believe in punctuated equilibrium or gradualism?   Choices:  - it depended  - neither  - punctuated equilibrium  - gradualism  A:
gradualism


Q: Answer the following question given this paragraph:   Motion is defined as a change of position.   Q: Define motion.   Choices:  - gravitational pull  - distance traveled  - speed of objects  - change of position  A:
A: change of position


Question: Answer the following question given this paragraph:   Vertebrates. From the smallest of fish to us. One of the main features we all have in common is our backbone. Vertebrates describes main biological features of fish, amphibians, reptiles, birds, and mammals.   Q: Vertebrates. from the smallest of fish to us. one of the main features we all have in common is our what?   Choices:  - hair  - warm blood  - laying eggs  - backbone  A:
Answer: backbone


*Question*
Answer the following question given this paragraph:   Gnathostomes: Jawed Fishes Gnathostomes or “jaw-mouths” are vertebrates that possess jaws. One of the most significant developments in early vertebrate evolution was the development of the jaw, which is a hinged structure attached to the cranium that allows an animal to grasp and tear its food. The evolution of jaws allowed early gnathostomes to exploit food resources that were unavailable to jawless fishes. Early gnathostomes also possessed two sets of paired fins, allowing the fishes to maneuver accurately. Pectoral fins are typically located on the anterior body, and pelvic fins on the posterior. Evolution of the jaw and paired fins permitted gnathostomes to expand from the sedentary suspension feeding of jawless fishes to become mobile predators. The ability of gnathostomes to exploit new nutrient sources likely is one reason that they replaced most jawless fishes during the Devonian period. Two early groups of gnathostomes were the acanthodians and placoderms (Figure 29.10), which arose in the late Silurian period and are now extinct. Most modern fishes are gnathostomes that belong to the clades Chondrichthyes and Osteichthyes.   Q: What is the hinged structure attached to the cranium that allows an animal to grasp and tear its food?   Choices:  - tooth  - neck  - throat  - jaw  A:
**Answer**
jaw


(Question)
Answer the following question given this paragraph:   Plant Parasites Protist parasites of terrestrial plants include agents that destroy food crops. The oomycete Plasmopara viticola parasitizes grape plants, causing a disease called downy mildew (Figure 23.33). Grape plants infected with P. viticola appear stunted and have discolored, withered leaves. The spread of downy mildew nearly collapsed the French wine industry in the nineteenth century.   Q: What disease is caused when the oomycete plasmopara viticola parasitizes grape plants?   Choices:  - dainty mildew  - alkaline mildew  - toxic mildew  - downy mildew  A:
(Answer)


assistant: downy mildew