Answer:
Earth's atmosphere is composed of about 78% nitrogen, 21% oxygen, and one percent other gases. These gases are found in layers (troposphere, stratosphere, mesosphere, thermosphere, and exosphere) defined by unique features such as temperature and pressure.
Explanation:
Answer:
Water can occur in three states: solid (ice), liquid, or gas (vapor). Solid water—ice is frozen water. When water freezes, its molecules move farther apart, making ice less dense than water.
Explanation:
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Answer:
A. 2:5
B. 4:13
C. 4:7
D. 50:11
Explanation:
To find a ratio in it’s simplest form, multiply the the fraction/decimal until you get a whole number and make sure that the ratio can’t be evenly reduced by dividing one number by the other.
Also, you marked this question as Geography instead of Math
It’s the bridge between the Late Middle Ages, the Early Renaissance, and the Early modern period.