Answer the following question given this paragraph: Trophic level 4 = tertiary consumers that eat secondary consumers. Q: Trophic level 4 = tertiary consumers that eat what kind of consumers? Choices: - insects - herbivores - primary consumers - secondary consumers A:
secondary consumers
Answer the following question given this paragraph: There are billions of bacteria inside the human digestive tract. They help us digest food. They also make vitamins and play other important roles. We use bacteria in many other ways as well. For example, we use them to:. Q: Billions of what inside the human digestive tract help us digest food, make vitamins and play other important roles? Choices: - neurons - viruses - red blood cells - bacteria A:
bacteria
Q: Answer the following question given this paragraph: Enzymes are involved in most of the chemical reactions that take place in organisms. Q: What substances, which serve as catalysts, are involved in most of the chemical reactions that take place in organisms? Choices: - proteins - vitamins - carbohydrates - enzymes A:
A: enzymes
Question: Answer the following question given this paragraph: An asteroid can only change due to a collision. A collision may cause the asteroid to break up. It may create craters on the asteroid's surface. An asteroid may strike a planet if it comes near enough to be pulled in by its gravity. Q: What is the only thing that can change an asteroid? Choices: - weather - a wind - a situation - a collision A:
Answer: a collision
*Question*
Answer the following question given this paragraph: The male gametophyte produces flagellated sperm that must swim to the egg formed by the female gametophyte. For this reason, sexual reproduction must happen in the presence of water. Therefore, nonvascular plants tend to live in moist environments. Though the life of a nonvascular seedless plant is a cycle, this can be considered the initial step in the life cycle. Q: When flagellated sperm must swim to the egg, sexual reproduction requires the presence of what substance? Choices: - air - nitrogen - sunshine - water A:
**Answer**
water
Q: Answer the following question given this paragraph: Friction is a force that opposes motion between any surfaces that are touching. Q: What is a force that opposes motion between any surfaces that are touching? Choices: - vibration - tension - gravity - friction A:
A: friction