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* 1. Scientific investigations start with

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* 2. Variables are

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* 3. Scientists measure data using the International System of Units (SI). What unit is a part of the International System of Units (SI)?

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* 4. Bill and Bob are biological twins who were adopted as babies. Their adoptive father and his father and his father (Billy and Bob’s father, paternal grandfather, and paternal great-grandfather) all suffered from early-onset fingernail greening. Which of the following statements is most likely to be the case?

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* 5. Genetically modified crops and livestock offer the possibility of greater yield and food quality, reductions in pesticide use, and higher profits for agricultural businesses. They are viewed by some as a way to help reduce world hunger by increasing food production and reducing losses to pests and varying environmental conditions. Each year, industrial agriculture relies more heavily on genetically modified crops. There are some concerns about our increasing use of genetically modified crops and livestock, including their safety for human consumption and their effects on the environment.

Based on the passage above, if genetically modified crops were to be banned, what could be the largest negative impact to humans?

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* 6. As part of a chemistry experiment, 1025 milliliters of water is mixed into a beaker that contains 175 milliliters of motor oil.

(1 liter = 1000 milliliters)

After adding the water, how many liters of liquid are in the beaker?

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* 7. Animals that feed exclusively on plants are called:

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* 8. In the 21st century, worker bees in bee colonies have been abandoning their queens and are deserting their hives in record numbers. Known as Colony Collapse Disorder, honeybees have been mysteriously disappearing across the planet—and one area that has been seriously affected is California’s Napa Valley. This issue became more commonly known when The National Agriculture Statistics Service reported in 2008 that only 2.44 million honey-producing hives were in the United States, down from 4.5 million in 1980.

There is no consensus among scientists as to what is causing Colony Collapse Disorder, though the USDA has undertaken a plan of action to stem the collapsing colonies involving several steps: survey and data collection; analysis of samples; hypothesis-driven research; mitigation and preventive action. The first findings from the USDA were published in 2009, and suggested factors such as pesticides, parasites, and pathogens may be possible causes, all of which have affected hives in Northern California.

One researcher has hypothesized that chemical pesticides are solely responsible for colony collapse disorder in Napa Valley. To test her hypothesis she is planning to run an experiment. She has obtained several healthy bee colonies and plans to expose them to pesticides while measuring the health of the colonies.
 
Which additional information would be the most useful in helping her design this experiment?

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* 9. Tides are mostly caused by the

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* 10. Which system enables the movement of the body?

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