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ANSWER:</h2>
<u><em>If you have found a radiometric age for the surrounding layers of volcanic ash, you can say that the age of the intervening layer is halfway between those specific dates.</em></u>
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Answer:
Radiometric dating
Explanation: Radiometric dating is a precise method of determining the age of archeological artifacts and rocks, it usually makes use of certain radio isotopes of Uranium-235,Rubidiun-87 etc.
Radiometric dating which is also known as radioactive dating is carried out by comparing the naturally occurring radioactive materials of the artifact or rock under study to product of its decay process.
Craters dating is a random process so its reliability can not be guaranteed.
Answer: molten rock that cools and hardens on Earth's surface.
Explanation: Lava is liquid rock that are thrown to the Earth's surface by the action of a volcanic eruption. On cooling a Lava form an igneous rock. The Lava are found in the Earth's crust naturally but are thrown to the surface during a volcanic eruption. Lava has the ability to travel long distances during an Eruption.
Answer:
gulf stream doesnt fit in
the others are all currents
Explanation:
Explanation:
Brownfields are unused urban spaces, usually defined by their previous industrial use and therefore might have soil contamination but not necessarily. Their shared characteristics are that they no longer serve the intended purpose (eg. Factory gone bankrupt), are abandoned or at leasr under used, contain(ed) buildings, might be contaminated, requite outside help to be revitalised.
