<u>Answer:</u>
Space exploration is addressing the outer space, its about exploring the universe and finding an answer to some unanswered questions.
For any country to be the first to reach outer space is a proud moment. It helps them to expand their technology, it helps them to promote connection with countries of the world.
For example, United States was the first county who put the first man, Yuri Alekseyevich Gagarin into the space. This was the great achievement for United States. Their connections with other powerful countries grew.
And which is why it is important for a country to be the first to reach outer space not only to achieve success, but also so that they can provide the world with new information, and details about the outer space.
Answer: B. Metamorphic rocks
Explanation: Metamorphic rocks are those that have undergone changes due to extreme heat and pressure. Thus, the rock, from which it becomes a metamorphic rock, is heated at temperatures above 150-200 ° and exposed to a pressure of 1500 bar. In this way, the structure of the rock is changed, in terms of the arrangement of the atoms, and the result is a change of physical and chemical properties. There are two basic types of metamorphic rocks: foliated and slate. Generally, some of the metamorphic rocks are anthracite, schist, quartzite, marble, etc.
