Q: What do you call aquatic biomes in the ocean? Read this paragraph and choose the correct option from the provided answers: Anglerfish live in the ocean. Aquatic biomes in the ocean are called marine biomes . Organisms that live in marine biomes must be adapted to the salt in the water. For example, many have organs for excreting excess salt. Two ocean zones are particularly challenging to marine organisms: the intertidal zone and the deep ocean. Choices: - freshwater biomes - coastal biomes - ocean dwellers - marine biomes A:
marine biomes

(Question)
Q: Fluoride ion is widely used in water supplies to help prevent what? Read this paragraph and choose the correct option from the provided answers: Fluoride ion is widely used in water supplies to help prevent tooth decay. Chloride is an important component in ion balance in blood. Iodide ion is needed by the thyroid gland to make the hormone thyroxine. Choices: - rust - bacteria - chlorine taste - tooth decay A:
(Answer)
tooth decay

Ques: Q: What term is used to describe a cross between two individuals that have different traits? Read this paragraph and choose the correct option from the provided answers: Mendel first worked with plants that differed in a single characteristic, such as flower color. A hybridization is a cross between two individuals that have different traits. A hybridization in which only one characteristic is examined is called a monohybrid cross . The offspring of such a cross are called monohybrids. Mendel noted that hybridizing true-breeding (P generation) plants gave rise to an F 1 generation that showed only one trait of a characteristic. For example, a true-breeding purple-flowering plant crossed with a true-breeding white-flowering plant always gave rise to purple-flowered hybrid plants. There were no white-flowered hybrids. Mendel wanted to know what happened to the white-flowers. If indeed a "heritable factor" for white-flower had disappeared, all future offspring of the hybrids would be purple-flowered - none would be white. To test this idea, Mendel let the F 1 generation plants self-pollinate and then planted the resulting seeds. Choices: - assimilation - fraternization - purebreed - hybridization A:
Ans: hybridization

(Q).
Q: The number of neutrons and electrons may vary or change in an atom. what happens to the number of protons? Read this paragraph and choose the correct option from the provided answers: The number of protons per atom is always the same for a given element. However, the number of neutrons may vary, and the number of electrons can change. Choices: - decreases - increases - depends - remains the same A:
(A).
remains the same

Ques:Q: What tool is useful for studying the ocean floor because the environment is remote and underwater? Read this paragraph and choose the correct option from the provided answers: Studying the ocean floor is difficult because the environment is so hostile. The seafloor can be studied indirectly with tools such as sonar. It can be studied directly using special vehicles. Some vehicles carry scientists and their devices to the ocean floor. Other vehicles are operated remotely. Choices: - microscope - telescope - scale - sonar A:

Ans:sonar

Q: About 20 percent of carbon dioxide is bound by hemoglobin and is transported where? Read this paragraph and choose the correct option from the provided answers: Carbaminohemoglobin About 20 percent of carbon dioxide is bound by hemoglobin and is transported to the lungs. Carbon dioxide does not bind to iron as oxygen does; instead, carbon dioxide binds amino acid moieties on the globin portions of hemoglobin to form carbaminohemoglobin, which forms when hemoglobin and carbon dioxide bind. When hemoglobin is not transporting oxygen, it tends to have a bluish-purple tone to it, creating the darker maroon color typical of deoxygenated blood. The following formula depicts this reversible reaction:. Choices: - brain tissues - intestines - bones - lungs A:
lungs