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Answer:
The outer core is the only layer that is liquid. It is also mainly made from nickel and iron. The main job of the outer core is that it's responsible for the Earth's magnetic field. As the earth spins, the liquid inside this layer spins aswell, keeping it balanced.
Answer:
• The closing of the frontier
Explanation:
• The closing of the frontier• The closing of the frontier• The closing of the frontier• The closing of the frontier• The closing of the frontier• The closing of the frontier• The closing of the frontier
The question is incomplete, the complete question is shown in the image attached to this answer.
Answer:
139.13
Explanation:
The average atomic mass of the element Likhitium is the sum of the relative abundance of all the isotopes of Likhitium.
We obtain the relative atomic mass of Likhitium as follows;
(44.7/100 * 138) + (52.3/100 * 139) + (0.5/100 * 140) + (2.5/100 * 141)
61.7 + 73.2 + 0.7 + 3.53 = 139.13
Hence the relative abundance of Likhitium is 139.13
Answer: <span>the main anthropogenic greenhouse gas produced in the united states.
Anthropogenic means that the man is the responsible for its generation.
Fuel consumption for vehicles, factories and houses generates huge amounts of CO2.
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Let's review the other options:
<span>a. the
most abundant greenhouse gas
FALSE: The most abundant greenhouse gas is water vapor.
b. the most potent (per molecule) gas. of the
greenhouse gases
Methane is considered more potent than CO2 as heat-trapping.
c. the only greenhouse gas presently decreasing in the
atmosphere
CO2 has not decreased but increased.
d. the main anthropogenic greenhouse gas produced in the united
states
TRUE as stated initially
e. the only greenhouse gas presently increasing in the atmosphere
FALSE: Methane (CH4) is also increasing.
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