The slant of the earth is called the earth's axis. Earth's tilt is 23.5 degrees on its axis.
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The elements listed in the choices are radioactive materials. These materials are very unstable because of the high neutron-to-proton ratio in the nucleus. Because of this, they spontaneously undergo nuclear reactions by giving off sub-particles in order to lower the ratio. They emit radiation in the form of alpha, beta or gamma.
Half-life is the length of time it needs to completely react half of the original amount. For example, it would take Bismuth 60.5 seconds to use up half of its amount. Therefore, the lower the half-life the faster the reaction is and the lesser the residual amount will be. With that being said, the answer would be Bismuth because it only takes seconds.
Answer:
A. Karsty Topography
Explanation:
Karsty topography is characterized by numerous caves, sinkholes, fissures, and underground streams and it is usually found regions of high rainfall where bedrock consists of carbonate-rich rock, such as limestone, which is easily dissolvable
The Mayans hunted deer, monkey, rabbits, etc, as a source of food, also they collected trees and vegetation for building things
