The correct answers are:
1. geothermal energy - It is energy produced from the heat of magma and other volcanic materials
2. lahar - It is an avalanche of water, mud, and other materials that a volcanic eruption can produce
3. tephra - It is volcanic rock and debris that is blasted from a volcano during an erruption.
Answer:
Another reason why the Middle Ages are often called the Dark Ages is because, compared with other eras, historians don't know as much about this time. In some ways, this period of time has been lost to history. Many important records from this time have not survived.
Explanation:
you can say according to the article they are called Middle ages because of the black death.
Answer:
1
Explanation:
a triangle has three sides and three angles and a rectangle has 4 sides so the formula is n-3 . no in this case equals 4 so 4-3=1
