Answer the following question given this paragraph: Macroevolution is evolution over geologic time above the level of the species. One of the main topics in macroevolution is how new species arise. The process by which a new species evolves is called speciation . How does speciation occur? How does one species evolve into two or more new species?. Q: What is the term for evolution over geologic time above the level of the species? A:
OPTIONS:
- mutation
- speciation
- microevolution
- macroevolution

Answer: macroevolution

Question: Answer the following question given this paragraph: Negative electrons are attracted to the positive nucleus. This force of attraction keeps electrons constantly moving around the nucleus. The region where an electron is most likely to be found is called an orbital. Q: What is the region called where an electron is most likely to be found? A:
OPTIONS:
- the shell
- the nucleus
- the ellipse
- the orbital
Answer: the orbital

input with options: Answer the following question given this paragraph: Predators play an important role in an ecosystem. For example, if they did not exist, then a single species could become dominant over others. Grazers on a grassland keep grass from growing out of control. Predators can be keystone species . These are species that can have a large effect on the balance of organisms in an ecosystem. For example, if all of the wolves are removed from a population, then the population of deer or rabbits may increase. If there are too many deer, then they may decrease the amount of plants or grasses in the ecosystem. Decreased levels of producers may then have a detrimental effect on the whole ecosystem. In this example, the wolves would be a keystone species. Q: What type of species have a large effect on the balance of organisms in an ecosystem? A:
OPTIONS:
- decomposers
- producers
- secondary consumers
- keystone
output: keystone

Q: Answer the following question given this paragraph: Q: In vertebrates, cholesterol is synthesized in which organ and obtained from the diet? A:

OPTIONS:
- the bone
- the brain
- heart
- the liver

A: the liver

input: OPTIONS:
- organelles
- mammals
- invertebrates
- vertebrates Now, answer this question: Answer the following question given this paragraph: Vertebrates are animals that have a backbone. All of them are placed in the Phylum Chordata. Modern vertebrates include fish, amphibians, reptiles, birds, and mammals. Only about 5 percent of animal species are vertebrates. Q: What do we call animals that have a backbone and belong to the phylum chordata? A:
A:
output: vertebrates

Question: Answer the following question given this paragraph: Acids are ionic compounds that produce positively charged hydrogen ions (H + ) when dissolved in water. Acids taste sour and react with metals. Bases are ionic compounds that produce negatively charged hydroxide ions (OH - ) when dissolved in water. Bases taste bitter and do not react with metals. Examples of acids are vinegar and battery acid. The acid in vinegar is weak enough to safely eat on a salad. The acid in a car battery is strong enough to eat through skin. Examples of bases include those in antacid tablets and drain cleaner. Bases in antacid tablets are weak enough to take for an upset stomach. Bases in drain cleaner are strong enough to cause serious burns. Q: What is produced when a base is dissolved in water? A:
OPTIONS:
- alkaline ions
- synthesis ions
- ingredient ions
- hydroxide ions
Answer:
hydroxide ions