It is true walking in acid rain or even swimming in acid lake is no more dangerous than walking in clean water.
Answer:
A. Bovine
Explanation:
A bovine relates or has qualities of an ox or a cow. The rest are or relate to pigs.
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Muffin~
The coolest layer is the crust. The crust is on the surface of the earth (where we are) . Inner Core
Answer:
A supernova results in a massive explosion of a star.