Answer:
Explanation:
B
Gravitational tidal heating is stronger on Io than any other moon in the Solar System, providing a source of heat that causes its high level of geological activity.
The answer is D. (Road building)
It is expected that seafloor samples taken farther from land usually contain a greater proportion of biogenous sediments because sediments are thinnest on the seabed closest to spreading centres (young seafloor) and thicker distant from the ridge (older seafloor with more time for accumulation). Additionally, sediments are substantially thicker close to continents.
More about seafloor sediments:
Terrigenous, pelagic, and hydrogenous sediment are the three different types of sea floor sediment. Terrigenous sediment is deposited on the continental shelf, continental rise, and abyssal plain and is derived from the land.
Clay particles and tiny marine animal skeletons that progressively sink to the ocean floor make up pelagic sediment. Minerals that precipitate from seawater on the ocean floor, such as manganese nodules, are abundant in hydrogenous sediments.
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Answer is: flyby spacecraft.
Flyby spacecraft is spacecraft designed to approach planets but not be captured by their orbit or land. Flyby <span>spacecraft spends no more than a few hours near the planet and observes only a small area. Some flyby are: Pioneer, Mariner 4, Cassini.</span>