Q: Water is an oxide of what element? Read this paragraph and choose the correct option from the provided answers: Carbon dioxide is an oxide of carbon, while water is an oxide of hydrogen. Early scientists viewed oxidation as a process in which a substance was reacted with oxygen to produce one or more oxides. In the previous examples, magnesium and methane are being oxidized. Choices: - nitrogen - helium - carbon - hydrogen A:
hydrogen

Q: The bone matrix consists of tough protein fibersmainly what? Read this paragraph and choose the correct option from the provided answers: Many people think of bones as being dead, dry, and brittle. These adjectives correctly describe the bones of a preserved skeleton, but the bones in a living human being are very much alive. As shown in Figure below , the basic structure of bones is bone matrix , which forms the underlying rigid framework of bones, formed of both compact and spongy bone. The bone matrix consists of tough protein fibersmainly collagenthat become hard and rigid due to mineralization with calcium crystals. Bone matrix is crisscrossed by blood vessels and nerves and also contains specialized bone cells that are actively involved in metabolic processes. Choices: - tissues - hemoglobin - tendons - collagen A:
collagen

Q: Q: Illnesses caused by bacteria in food are commonly known as what? Read this paragraph and choose the correct option from the provided answers: Some pathogens spread through food or water. When harmful bacteria contaminate food, they cause foodborne illness, commonly called food poisoning. An example of a pathogen that spreads through water is the protozoan named Giardia lamblia, described in Table above . It causes a disease called giardiasis. Choices: - chemical poisoning - the flu - viral poisoning - food poisoning A:
A: food poisoning

Question: Q: What type of organism, including sea stars and sand dollars, is named for their spiny skin? Read this paragraph and choose the correct option from the provided answers: Echinoderms are named for their "spiny skin. " However, the spines aren't on their skin. They are part of the endoskeleton. The endoskeleton consists of calcium carbonate plates and spines, covered by a thin layer of skin. Adult echinoderms have radial symmetry. This is easy to see in the sea star and sand dollar in Figure above . However, echinoderms evolved from an ancestor with bilateral symmetry. Evidence for this is the bilateral symmetry of their larvae. Choices: - mollusks - diatoms - chordates - echinoderms A:
Answer: echinoderms

*Question*
Q: Sound navigation and ranging is an acronym for what, which is used to locate underwater objects such as submarines? Read this paragraph and choose the correct option from the provided answers: Sonar stands for sound navigation and ranging. It is used to locate underwater objects such as submarines. Choices: - sound transmission - GPS - radar - sonar A:
**Answer**
sonar

Q: Q: What theory proposes that microorganisms are the cause of many diseases? Read this paragraph and choose the correct option from the provided answers: The germ theory proposes that microorganisms are the cause of many diseases. Choices: - malignant theory - evolution theory - mutated theory - germ theory A:
A: germ theory