Answer:
There are two reasons: at higher altitudes, there is less air pushing down from above, and gravity is weaker farther from Earth's center. So at higher altitudes, air molecules can spread out more, and air density decreases
If we observe the light from space is exhibiting a red shift.This would mean the universe is expanding.
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What is universe?</h3>
The term "universe" (from the Latin "universus") refers to the entirety of space, time, and all of its objects, including galaxies, planets, stars, and other types of matter and energy. The prevailing cosmological explanation for the universe's formation is the Big Bang theory. This hypothesis states that the universe has been expanding ever since the Big Bang, which took place 13.7870.020 billion years ago. While it is uncertain how big the entire universe is in terms of space, it is possible to calculate the size of the observable universe, which has a current diameter of about 93 billion light-years.
Early cosmological conceptions of the cosmos were geocentric, with Earth as the centre, and were created by Greek and Indian philosophers.
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1. Rise in crime
2. Uncertainty within the people
Earth is composed of four main layers, starting with an inner core at the planet's center, enveloped by the outer core, mantle, and crust. The inner core is a solid sphere made of iron and nickel metals about 759 miles (1,221 kilometers) in radius.
source: nasa
