Q: Answer the following question given this paragraph: The stratosphere is the layer above the troposphere. Temperature increases with altitude in this layer. The ozone layer occurs here. Q: What is the layer above the troposphere? Choices: - thermosphere - mesosphere - troposphere - stratosphere A:
A: stratosphere

Q: Answer the following question given this paragraph: Figure below shows a diagram of Mercury's interior. Mercury is one of the densest planets. Scientists think that the interior contains a large core made mostly of melted iron. Mercury's core takes up about 42% of the planet's volume. Mercury's highly cratered surface is evidence that Mercury is not geologically active. Q: What do scientist's believe mercury's core is mostly made of? Choices: - water - quicksilver - helium gas - melted iron A:
A: melted iron

Q: Answer the following question given this paragraph: Plants alternate between haploid and diploid generations. Haploid cells have one of each pair of chromosomes. Diploid cells have two of each pair. Q: Plants alternate between haploid and what? Choices: - triploid - monoplooid - monoxoid - diploid A:
A: diploid

Q: Answer the following question given this paragraph: The ocean is becoming increasingly polluted with trash. Ocean acidification is also occurring because ocean water dissolves some of the excess carbon dioxide in the atmosphere. The more acidic water harms aquatic organisms. Q: Ocean acidification results from the ocean absorbing what gas from the atmosphere? Choices: - hydrogen - nitrogen - oxygen - carbon dioxide A:
A: carbon dioxide