Answer :
The Earth is older than 4.3 billion years old because metamorphic rocks form from the melting of preexisting rock.
Typically, nitrogen and oxygen make up the Earth's atmosphere. A portion of the energy from the Sun is trapped near the surface by greenhouse gases in the atmosphere, such as carbon dioxide (CO2). Clouds that cover the majority of the earth are created by water vapour, which is abundant in the atmosphere. Tropical regions receive more solar energy than polar ones; this energy is then transferred through air and oceanic circulation. In addition to height and proximity to climatically regulating waters, latitude affects a region's climate. In the majority of places, rocks, severe weather, like tropical cyclones, thunderstorms, and heatwaves, happens and has a significant impact on living.
Applying Relative Age Principles Below is a cross section with a numbers of rock units, including intrusions and unconformities. For reference, rock units
T
and
W
are igneous - all other lettered rock units are sedimentary. In the space to the right of the image, put the ten units in relative age order. Warning: This exercise requires you to get all the rocks in the proper order - if you have a majority of the sequence correct but shift the letters because of a mistake, the effect will still be to lose significant points. The oldest rocks ever found on planet Earth are metamorphic rocks in Canada absolute dated to about to 4.3 billion years ago. Considering everything you have read, what can we say about the age of the Earth?
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