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viktelen [127]
3 years ago
10

How do geologists know that earth and the solar system are approximately 4.6 billion years old?

Geography
1 answer:
zaharov [31]3 years ago
6 0
They found rocks from then and those rocks had the earliest fossils or life on earth.
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What is the name of the narrow bridge of land that connects north America to South America
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Bering Strait is between North America (Alaska) and Asia - not South America. 

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3 years ago
Many _________ plantations were built in the northeast region of Brazil.
Anni [7]
Many sugar plantations were built in the northeast region of brazil. Brazil is a country that is considered as the largest sugarcane producer in the whole world. The weather in brazil is perfectly suited for the production of sugarcane. Brazil is also famous for the production of cocoa and cotton. The sugarcanes produced go to the factories where sugar is produced and exported to different parts of the world. In the northeast region of brazil oil exploration is also a part of the economy along with tourism. Tourists from different parts of the world come here.
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3 years ago
The isotope silicon 32 decays into phosphorus 32. Silicon 32 has a half-life of 170 years and can be used to find the age of roc
eduard

Answer:

B and C

Explanation:

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This is the concept of half-life. Half life is the time take for half of a radioactive isotope to disintegrate. The shorter the half life the faster the isotope disintegrates.

From the question, we were told that it would take 170yrs for half of the isotope of Silicon to disintegrate to Phosphorus. This is the half life.

C. The half life can be used to determine the amount of Si-32 that has decayed from the time closure temperature was reached.

The closure temperature is very important in radioactivity. It is the temperature at which a system has cooled and there is no resulting disintegration of parent and daughter isotopes.

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5 0
4 years ago
What visual evidence do scientists have to support the fact that Jupiter is the fastest-rotating planet in the solar system?
ss7ja [257]

Answer:

Jupiter is the 5th and most fastest spinning planet it completes an orbit around 11.86 years every year.

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Jupiter is the biggest planet in our solar system, it's a gaianet and gaseous planet about 2.5 tims of all the planets combined. Like other planets jupiter doesn't have any defined solid surface, as a result of its rotation it has an oblate spheroid bulge along the equator and at it's boundaries are greater turbulence of storms and popular amongst them is the great Red storm.A complete day at the equator can be estimated by just nine hours and 50 minutes at the poles.

8 0
3 years ago
All of the following are enacted to limit the amount of goods allowed into a country except __________. A. quotas B. sanctions C
ICE Princess25 [194]

Answer:

the answer to this question is D

Explanation:

8 0
3 years ago
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