Q: What do scientist's believe mercury's core is mostly made of? Read this paragraph and choose the correct option from the provided answers: 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. Choices: - water - quicksilver - helium gas - melted iron A:
melted iron

Q: What has the burning of fossil fuels increased in the atmosphere? Read this paragraph and choose the correct option from the provided answers: Ocean water normally dissolves some of the carbon dioxide in the atmosphere. The burning of fossil fuels has increased the amount of carbon dioxide in the atmosphere. As a result, ocean water is also dissolving more carbon dioxide. When carbon dioxide dissolves in water, it forms a weak acid. With higher levels of dissolved carbon dioxide in ocean water, the water becomes more acidic. This process is called ocean acidification. Choices: - ozone - oxygen - temperature - carbon dioxide A:
carbon dioxide

Q: Q: Anabolic reactions require energy, so they are considered what type of reaction? Read this paragraph and choose the correct option from the provided answers: Anabolic reactions involve forming bonds. Smaller molecules are combined to form larger ones. For example, simple sugars are combined to form complex carbohydrates. Anabolic reactions require energy, so they are endothermic. Choices: - autotrophic - exothermic - hydrostatic - endothermic A:
A: endothermic

Question: Q: Plants generally transport carbohydrates from leaves to roots and other nonphotosynthetic organs in the form of what? Read this paragraph and choose the correct option from the provided answers: Choices: - glucose - potassium - chloride - sucrose A:
Answer: sucrose

*Question*
Q: What are the male reproductive cells called? Read this paragraph and choose the correct option from the provided answers: Sperm ( Figure below ), the male reproductive cells, are tiny. In fact, they are the smallest cells in the human body. What do you think a sperm cell looks like? Some people think that it looks like a tadpole. Do you agree?. Choices: - mucus - ova - plasma - sperm A:
**Answer**
sperm

Q: Q: A statement that describes what always happens under certain conditions in nature is also known as what? Read this paragraph and choose the correct option from the provided answers: Scientists think of nature as a single system controlled by natural laws. Scientists strive to increase their understanding of the natural world by discovering natural laws. Laws of nature are expressed as scientific laws. A scientific law is a statement that describes what always happens under certain conditions in nature. Choices: - theory - hypothesis - scientific motion - scientific law A:
A: scientific law