Which of the following is a natural disaster that can have a significant impact on human populations?a. hurricane
b. volcano
c. earthquake
d. all of the above User: Which of the following human activities can increase the risks of flooding?
a. cultivation
b. planting trees
c. soil management
d. widening rivers
Answers
Widening rivers can be a very important cause that can increase the risk of flooding. The correct option among all the options given in the question is option "d". If the humans deliberately cut the banks and widens the river, then it can cause floods during the rainy season as the banks become weak to hold the force of water that comes in.
1. The correct answer for the first question is - d. all of the above.
Hurricanes, volcanoes, and earthquakes are all natural disasters that can have a huge negative impact on humans. The hurricanes cause big floodings and have extremely strong winds that destroy most of the things on their way. Volcanoes pollute the air with the release of toxic gases and ash, the lava flows melt everything on their way, and the eruptions deliver rain of huge rocks to fall on the surrounding area. Earthquakes have extremely fast vibrations with whom they can destroy most of the buildings without a problem.
2. The correct answer for the second question is - d. widening rivers.
With the widening of rivers the banks are becoming much weaker because their naturale fence of trees and bushes has been destroyed for this to take action. The trees and bushes both represent a physical obstacle on the surface and with their root systems hold the soil in one place as well taking in huge amounts of water for their needs. When they are gone the soil has no protection whatsoever and every flooding will cause much bigger damage than it would naturally do.
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Although Mars is one of the most Earth-like planet in the solar system, living on it would be pretty tough. It is extremely cold on Mars, night time temperature averaging below -100°C. You think the 40 degree weather right now is cold. Try living on Mars. Nobody could survive on Mars without a really advanced winter coat. Another reason that living on Mars would make it hard is the atmosphere. It is like a tiny little needle, though. Since it is very delicate, you would need a spacesuit and some oxygen to bear the low pressure. Your saliva would completely fry your lungs into a nice dinner for possible aliens who might live there. One tiny hole in your spacesuit and you're out forever. Every two Earth years, there is a chance of a dust storm on Mars. Would you like to live on Mars that has a dust storm that lasts for weeks and the lighting drops to 99%? That other 1% is you seeing your death. You might bring some advanced night vision and some sunglasses for the dust. I believe we will have life on Mars soon, with advanced technology and the right people to plan it out.
How may Mars have been different in the past?
Mars was never a cold planet. At once it had a thick atmosphere and known to have a reliable water source on the planet. This would have been a great time to take a visit to Mars and see if we can set human life on the planet, but that was about 4 billion years ago and we didn't have the technology we have nowadays to set a person onto a planet.
carving
B.
pottery
C.
weaving
D.
dancing
Answers
Unlike many other arts in western and central Africa, pottery typically is done by women. African potters were used for different purposes from decorative to culinary reasons. The pots were created differently depending on the origins of their different traditions and associated dietary and religious customs.
Answers
present location by mass movement
(2) Catskills, and were transported to their
present location by glaciers
(3) Adirondack Mountains, and were transported
to their present location by mass movement
(4) Adirondack Mountains, and were transported
to their present location by glaciers
Answers
These boulders most likely resulted from the weathering of bedrock formed in the AdirondackMountains, and were transported to their present location by glaciers. Thus, option 4th is correct.
What is weathering of bedrock?
Cracks and fissures in bedrock create paths for air and water, which chemically react to break up rock, eventually forming soil – a necessary component for all terrestrial creatures. Bedrock weathering is essential to life on Earth.
A party of hikers in New York's Catskill area discovers numerous big boulders made of metamorphic rock. These stones were most likely created by the weathering of Adirondack Mountains bedrock and were moved to their current location by glaciers. As a result, option 4 is correct.
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Answer:
4
Explanation:
Other answer by other person is false
atoms to 75 percent 40Ar and 40Ca atoms.
How many years old is this rock?
(1) 0.3 10^9 y (3) 2.6 10^9 y
(2) 1.3 10^9 y (4) 3.9 10^9 y
Answers
The age of the rock is mathematically given as
t= 2.6 10^9 y
What is the age of the rock?
Question Parameter(s):
a ratio of 25 percent 40K
atoms to 75 percent 40Ar and 40Ca atoms.
Generally, the equation for the half lif is mathematically given as
Therefore
t= 2.6 10^9 y
In conclusion, the age of the rock is
t= 2.6 10^9 y
Read more about Time
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Answers
It's an essential part of the wind power plant, which enables turning mechanical energy form blade's movement into generator, where it is converted into electricity.