The difference is just 1 mph. Winds 73 mph or less is a storm and 74 mph or more is a hurricane.
Ozone layer depletion was not noticed until 1979, while CFC’s have been around since 1920s because CFCs take time to enter the stratosphere and remain there for at least 60 years after their initial release.
Option: A
Explanation:
Ozone layer is found in stratosphere. Ozone plays a dual role in the environment. When it is in the ground surface zone it is a harmful gas but when its in the atmosphere it is a life saving layer which absorbs UV rays and protect human beings and animals from the harmful affect of poisonous gases.
Though ozone layer started depleting from 1920. But it came into notice from 1979 as CFCs take time to enter the stratosphere and remain there for at least 60 years after their initial release.
Nation states are difficult to create because of colonies ((tell me if u need to know why because I can help with that))
Answer:
<h3>that is my answer hopes it helps you wish you all the best</h3>
Explanation:
<h3>Some of the environment changes are caused by the slow movement of the continents (plates tectonics) and take a millions of years. Most of the changes or cause by the human influences and natural ecological process. </h3>
The correct answer is True.
Explanation
A constellation is a group of stars that when united by imaginary loops form a figure, these stars are connected imaginatively by loops to form these figures and are original from ancient cultures, mainly from the Middle East and Mediterranean Europe. The formation of constellations is due to the invariability of movement of the stars, on the other hand, the stars that form a constellation can be very far from each other and are only related by being part of a constellation. The celestial sphere is usually divided into two, the constellations that are to the north are known as northern constellations and those that are to the south southern constellations, these two are divided by means of the celestial equator. So, it is true, A constellation us a set of grouped into a figure.
