Q: Answer the following question given this paragraph: The mouth is the first organ that food enters. But digestion may start even before you put the first bite of food into your mouth. Just seeing or smelling food can cause the release of saliva and digestive enzymes in your mouth. Q: What is the first digestive organ that food enters? A:

OPTIONS:
- intestine
- digestive system
- kidneys
- mouth

A: mouth

input: OPTIONS:
- organisms
- questions
- tissues
- samples Now, answer this question: Answer the following question given this paragraph: The girls in the picture above make up a small samplethere are only four of them. In scientific investigations, samples may include hundreds or even thousands of people or other objects of study. Especially when samples are very large, it's important to be able to summarize their overall characteristics with a few numbers. That's where descriptive statistics come in. Descriptive statistics are measures that show the central tendency, or center, of a sample or the variation in a sample. Q: In scientific investigations, descriptive statistics are useful for summarizing the characteristics of large what? A:
A:
output: samples

Answer the following question given this paragraph: Chondrichthyes: Cartilaginous Fishes The clade Chondrichthyes is diverse, consisting of sharks (Figure 29.11), rays, and skates, together with sawfishes and a few dozen species of fishes called chimaeras, or "ghost" sharks. " Chondrichthyes are jawed fishes that possess paired fins and a skeleton made of cartilage. This clade arose approximately 370 million years ago in the early or middle Devonian. They are thought to be descended from the placoderms, which had skeletons made of bone; thus, the cartilaginous skeleton of Chondrichthyes is a later development. Parts of shark skeleton are strengthened by granules of calcium carbonate, but this is not the same as bone. Most cartilaginous fishes live in marine habitats, with a few species living in fresh water for a part or all of their lives. Most sharks are carnivores that feed on live prey, either swallowing it whole or using their jaws and teeth to tear it into smaller pieces. Shark teeth likely evolved from the jagged scales that cover their skin, called placoid scales. Some species of sharks and rays are suspension feeders that feed on plankton. Q: Shark teeth likely evolved from the jagged scales that cover their skin, called what? A:

OPTIONS:
- heterotroph scales
- hook scales
- pinworm scales
- placoid scales

Answer: placoid scales

Problem: OPTIONS:
- light
- oil
- fuel
- electricity
Q: Answer the following question given this paragraph: Nuclear reactors use fission reactions to vaporize water. The resulting steam is used to drive a turbine, which generates electricity. Q: Nuclear reactors use fission reactions to vaporize water, producing steam to drive a turbine and generate what? A:
Answer: electricity

Problem:OPTIONS:
- divide
- lengthen
- multiply
- shorten

Answer the following question given this paragraph: As cells divide, their chromosomes get shorter. This is because the telomeres, the DNA sequences at both ends of a chromosome, lose material every time the DNA is replicated. The older the animal is, the shorter its telomeres will be, because of the number of cell cycles the cells have been through This is a natural part of aging. So, what happens to the clone if its transferred nucleus is already fairly old? Will the shortened telomeres affect its development or lifespan? The answer is still unclear. But starting a new organisms with "old" DNA with shortened telomeres is bound to have some effects, at least in some clones. Some cloned animals may be affected, others may not. Dolly the sheep's chromosomes did have shorter telomere lengths than normal. This means that Dolly's cells were aging faster than the cells from a normal sheep. Q: What happens to an animal's telomeres as it ages? A:
****
A: shorten

Problem:OPTIONS:
- continuous succession
- environmental succession
- colony succession
- ecological succession

Answer the following question given this paragraph: Ecological succession is the process in which a community changes through time. Primary succession occurs in an area that has never before been colonized. Secondary succession occurs in a formerly inhabited area that was disturbed. Q: What is the term for the process in which an area that has never before been colonized changes through time? A:
****
A:
ecological succession