The fly because it hit something that is 20000 kg
Answer:
TRUE
Explanation:
The earth is comprised of three distinct layers namely the core, mantle and the crust. The core is the extreme interior layer which is comprised of the denser elements like iron, nickel and other siderophile elements. Thee denser minerals are deposited, by sinking into the core of the earth forming the highest density layer. The core was formed about 1 to 1.5 billion years back.
Whereas, the least dense elements were concentrated in the upper region of the earth forming the crust. These are the lighter elements so it did not get sink into the bottom. But still many of these elements are found in association with the core rocks. There occurred constant evolution on the crustal portion of the earth.
Thus, these elements are found in larger proportions in the crust and were formed during the initial formation of the earth.
Hence, the above-given statement is True.
The answer is B that should be the answer
Answer:
Limestones and dolomites are examples of Carbonate rocks.
Carbonate rocks belong to the sedimentary rock.
Explanation:
Carbonate rocks are comprised of many calcite mineral. This calcite may be present either due to the dissolution by groundwater or it could be present due to the groundwater precipitation, depending upon various factors such as the pH of water, temperature of water, and the amount of dissolved ions present in the solution. The carbonate rocks are formed due to the deposition and compaction of these calcite minerals. These rocks have a composition of more than 50% of carbonate minerals.
Carbonate rocks are often characterized by the presence of karst topography, sinkholes, and caves. These limestone and dolomite are two of the major carbonate rocks commonly found on earth.