Answer:
The answer is option (B) Hydrothermal vents
Explanation:
Alvin is a submersible ship (that operates underwater). The ship is owned by the United States Navy. It has the capability of diving into very deep and dark ocean depths to carryout underwater explorations.
Prominent among Alvin's explorations was its discovery of Hydrothermal vents in 1977. The discovery established that vents exist underwater and that they (the vents) spray minerals into oceans when heated by magma.
Answer:
The Treaty of Tordesillas (1494) between Spain and Portugal, dividing the non-European world between them, gave the Portuguese a legal claim to a large part of the area to be called Brazil.
Explanation:
i know a lot about this im in 8th grade and i learned about this like last week for like a whole 2 months so trust me
