Answer: volcanic activity
Explanation: The vast majority of volcanic activity on the planet occurs along the mid-ocean ridge, and it is the place where the crust of the Earth is born. The material that erupts at spreading centers along the mid-ocean ridge is primarily basalt, the most common rock on Earth.
Answer:
C. Density differences
Explanation:
Lithospheric plates are equivalent to tectonic plates. They are located in the Earth's uppermost layer
Answer:
A market economy is the economic system where the businesses are privately owned, with the possibility of profit.
Explanation:
A is not correct because the traditional economy still has influnce by the government, and even if it strides to privatization, the changes in it are so slow that even decades would not lead to the total change of the economic system.
B is not correct because in the command economy everything is owned by the government and unions (like the ''zadruga''), where everything is controlled by the government.
C is not correct because under a communist system everything is owned by the government.
D is correct because the market economy is an economic system where every business is owned by the private sector, meaning that the people that own businesses are able to make their own decisions, and also it is up to them and their working as to how much profit they will obtain.
There are three main reasons why people are concerned that cell phones (also known as “mobile” or “wireless” telephones) might have the potential to cause certain types of cancer or other health problems:
Cell phones emit radiofrequency energy (radio waves), a form of non-ionizing radiation, from their antennas. Tissues nearest to the antenna can absorb this energy.
The number of cell phone users has increased rapidly. As of December 2014, there were more than 327.5 million cell phone subscribers in the United States, according to the Cellular Telecommunications and Internet Association. This is a nearly threefold increase from the 110 million users in 2000. Globally, the number of subscriptions is estimated by the International Telecommunications Union to be 5 billion.
Over time, the number of cell phone calls per day, the length of each call, and the amount of time people use cell phones have increased. However, improvements in cell phone technology have resulted in devices that have lower power outputs than earlier models.
