Answer:
A. are brought from the mantle to the surface in magma that hardens into kimberlite
Explanation:
Diamonds are brought to the surface from the mantle in a magma that is known as the kimberlite. This kimberlites is rich in gases and it is an igneous rock that has the following minerals,olivine, phlogophite, serpentine etc.
The origination of diamonds in the mantle happens as carbon transformation occurs due to heat and pressure occurs. The kimberlite pipes and what brings the diamonds to the surface
Answer:
Fast
Explanation:
For a river that deposits small particles where it flows into a sea, the current is likely to be fast.
A fast current is only able to winnow through the sediment and removes the fines.
- On reaching the river mouth with the sea, they settle and get deposited
- For a slow current, there is enough time for the energy to get along with the sediments.
- This ensures the proper drag of the particles throughout the session into a basin or the river mouth.
- Most fast currents are not usually deep enough to remove the coarse particles.
<u>Answer:</u>
<em>A country’s gross domestic product is the total amount of </em><u>goods and services</u><em> produced in a given year.</em>
<u>Explanation:</u>
Gross domestic product or the GDP is defined as the total number of monetary or market value in which all the goods which are well produced and the features which is delivered inside the country within a specified time.
<em>This method is used all over the world to measure the GDP of their respective region or area.</em>