Answer:
Marble is a type of rock. It is a metamorphic rock , which means rock which as changed it texture or shape or color over the time. These rocks are formed usually by uniting already existing substances on the earth. Limestone is the naturally available stone , which when undergoes metamorphosis turns into the formation of marble. Marble forms when the hot magma heats the limestone , the heat recrystallizes the calcite in the limestone changing its texture, shape etc.
"B" is your answer. Fossil Fuels take millions of years to decay.
Answer:
1. Which continent has the oldest population?Asia and Europe are home to some of the world's oldest populations, those ages 65 and above. At the top is Japan at 28 percent, followed by Italy at 23 percent.
2. What percentage of the world is below the age of 20? more than 147 million people around the world were between the ages of 80-99, accounting for 1.9% of the global population.
3. What percentage of the world is 40-59? 23.1%
4. What percentage of the World is above 60?A worldwide phenomenon
According to the latest estimates, by 2050 there will be 2 billion people aged over 60 (22% of world population). In 2050, world population is projected to be 3.6 times larger than it was in 1950.
5. Knowing these numbers, what problems do you believe may arise from these numbers in 20-30 years?
6. According to the reading, what effect does an aging population have on the world (positive and negative)?
Explanation:
srry i dont know the answers for 5 and 6
I hope this helps
im srry if im wrong
The correct answers are:
- It is a terrestrial planet;
The Earth is a terrestrial plant, and the main reason why it is classified as such is because it has a hard, rocky shell. The terrestrial planets seem to form closer to the Sun, or rather the star, while the gas planets further away from it.
- It has formed from gas and dust;
The most accepted theory about the formation of the Earth is that it formed from heated gas and dust, otherwise known as nebula. Under the gravity the material collapsed on itself, the particles started to merge with one another, and over time they became a large body, which under the influence of the spinning in a roughly circular manner, got the rounded shape.
