Answer:
D. they negatively impact the environment by destroying soil, animal habitats and waterways
Answer:
2200
Explanation:
The Hubble law states that
v= H × d
where, v = speed, H = Humble constant, d = distance.
Thus
v=22 km/(sec/million ly)×100 million ly
=2200 km/sec.
The atmosphere layer closest to the earth is referred to as the troposphere. Beyond the troposphere are the stratosphere, the ozone layer, the mesosphere, and the thermosphere. The atmosphere is made up of 78% nitrogen, 21% oxygen, and smaller amounts of argon, carbon dioxide, helium, and neon.
