Answer the following question given this paragraph: Q: In recent years, it has been hypothesized that molecules in the environment also act as? Choices: - pathogens - homeostasis disruptors - catalysts - endocrine disruptors A:
endocrine disruptors
Answer the following question given this paragraph: Elements are substances that cannot be broken down into simpler substances with different properties. Q: What are substances that cannot be broken down into simpler substances with different properties called? Choices: - atoms - compounds - molecules - elements A:
elements
Q: Answer the following question given this paragraph: The kidneys also need constant pressure to filter the blood. When the blood pressure drops too low, the kidneys increase the pressure. One way is by producing angiotensin, a blood vessel-constricting protein. This protein also signals the body to retain sodium and water. Together, the constriction of blood vessels and retention of sodium and water help restore normal blood pressure. Q: What organs need constant pressure to filter the blood? Choices: - lungs - dialysis - arteries - kidneys A:
A: kidneys
Question: Answer the following question given this paragraph: All life relies on a relatively narrow range of pH, or acidity. That's because protein structure and function are very sensitive to pH. Air pollution can cause precipitation to become acidic. Nitrogen and sulfur oxides, mainly from motor vehicle exhaust and coal burning, create acids when they combine with water in the air. The acids lower the pH of precipitation, forming acid rain . If acid rain falls on the ground, it may damage soil and soil organisms. If it falls on plants, it may kill them (see Figure below ). If it falls into lakes, it lowers the pH of the water and kills aquatic organisms. Q: When the ph of precipitation is lowered because of air pollution, what results? Choices: - abnormal rain - climate change - sleet - acid rain A:
Answer: acid rain
*Question*
Answer the following question given this paragraph: Insects are the only invertebrates than can fly. Flight is the main reason for their success. Q: The only invertebrates than can fly belong to what broad group, which is highly successful? Choices: - spiders - birds - bats - insects A:
**Answer**
insects
Q: Answer the following question given this paragraph: Soil type also influences the type of vegetation that can grow in the region. We can identify climate types by the types of plants that grow there. Q: Along with climate, this also influences the type of vegetation that can grow in the region? Choices: - gravity - fertilizer use - population density - soil type A:
A: soil type