Parts of Texas depend on groundwater pumped out of aquifers to supply water to cities. Why do city policymakers discourage the construction of roads, parking lots, and buildings over a aquifer recharge zones?

• Why do city policymakers discourage the construction of roads, parking lots, and buildings over a aquifer recharge zones because...

• City policymakers discourage the construction of roads, parking lots, and buildings over a aquifer recharge zones because...

• City policymakers discourage the construction of roads because...

Students roll a marble down a ramp and past a pair of electronic timing sensors. Based on the reading taken from the timing sensors and the measuring tape, what is the velocity of the marble as it passes the timing sensors?

• Based on the reading taken from the timing sensors and the measuring tape, what is the velocity of the marble as it passes the timing sensors is...

• The velocity of the marble as it passes the timing sensors based on the reading taken from the timing sensors and the measuring tape is...

• The velocity of the marble as it passes the timing sensors is...

Which of the relationships between an organism and its ecosystem is best represented in the drawing?

• Which of the relationships between an organism and its ecosystem is best represented in the drawing is...

• The relationships between an organism and its ecosystem is best represented by...

• The ecosystem is best represented in the drawing by...

A science book indicated that ammonium chloride has the chemical formula NH₄Cl. Based on the chemical formula, what are the properties of the compound?

• Based on the chemical formula, what are the properties of the compound are...

• Based on the chemical formula, the properties of the compound are...

• The properties of the compound are...

An atom becomes an ion when it gains or loses subatomic particles. This causes its electrical charge to change. How does an atom become an ion with an electrical change of +1?

• How does an atom become an ion with an electrical change of +1 is...

• An atom becomes an ion with an electrical change of +1 when...

• An atom become an ion when...

A student makes a repair with epoxy glue. While holding the parts together for a moment, he notices that the repaired area becomes slightly warm to the touch. The mixture becomes solid as it cures, forming a strong bond that holds the broken pieces together. What evidence for a chemical reaction is demonstrated by the repair of the broken pieces?

• What evidence for a chemical reaction is demonstrated by the repair of the broken pieces is...

• The evidence of a chemical reaction is demonstrated by ...

• The evidence for a chemical reaction demonstrated by the repair of the broken pieces is...

What is most likely the effect of a large earthquake that occurs beneath an ocean?

• What is most likely the effect of a large earthquake that occurs beneath an ocean is...

• The effect most likely caused by a large earthquake that occurs beneath an ocean is...

• The most likely effect of a large earthquake is...

Although half of the moon is always lit by the sun, an observer on Earth cannot always see the entire lit half of the moon. The moon changes its appearance to an observer on Earth as it goes through its cyclical orbit. What causes the observed cyclical phases of the moon?

• What causes the observed cyclical phases of the moon is...

• The phases of the moon are caused by...

• The observed cyclical phases of the moon is caused by...

Based on the food web, what is the interaction between the coyotes and mice in the ecosystem?

• What is the interaction between the coyotes and mice in the ecosystem is...

• The interaction between the coyotes and mice in the ecosystem in the food web is...

• The interaction between the coyotes and mice in the ecosystem is...

A wall of rocks is built seaward from a popular Texas beach to reduce erosion along the stretch of beach. How will the beach change in several years as a result of the construction of the rock wall?

• How will the beach change in several years as a result of the construction of the rock wall is...

• The beach will change in several years as a result of the construction of the rock wall by...

• As a result of the construction of the rock wall the change will be...