Answer:
<u>Iron </u>and <u>Nickel</u>
<u>core</u>
<u>Iron and Nickel</u>
Explanation:
Two of the most popular magnetic chemicals in the world are iron and nickel.
We can now match these metals with the description given in the question to check if they perfectly fit in the blanks.
The densities of iron and nickel are 7874kg/m3 and 8900kg/m3 respectively. To put this into perspective, the density of aluminium is only 2700kg/m3. This means that iron and nickel are really dense solid materials. These materials are strong enough to make the core of the earth.
Because these materials are also magnetic and strong, we can say that they are the materials that form the solid core of the earth's structure.
The correct answer is ores. A mineral or combination of minerals that contains metals or other substances in usable amounts is called an ore. An ore is basically a rock that contains minerals that have important elements including metals.
Answer:
Physical structure of the earths rock is changed by mechanical weathering.
Explanation:
Mechanical weathering is the method of busting big stones into small ones. This method usually occurs near the facade of the planet. Temperature also influences the land. The cold nights and hot days regularly make things to swell and contract. That change can effect rocks to crack and split apart.
NONE.
The Gobi desert encompasses Mongolia
The Arabian is located in the Arabian peninsula, Middle East.
The Sahara is the the northern Africa
The Atacama is located in Chile, South America.
