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Zielflug [23.3K]
2 years ago
13

Did earth experience normal or reverse polarity 1.5 million years ago

Biology
1 answer:
azamat2 years ago
7 0

Normal polarity

Explanation:

Earth's magnetic field used to be twice as strong 1.5 billion years ago as it is today and Earth's temperature other than what the geologists see from the 'normal' pattern. It has been noticed that some volcanic rocks were magnetized in opposite direction to the direction of the local Earth's field. It is clear that the Earth has experienced the normal polarity 1.5 years ago but at that time, the Earth's polarity was poorly understood.

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1 point
Lelu [443]

Answer:

The sun is 400x wider than the moon, but the moon is also 400x closer to the Earth

Explanation:

Although the the sun is roughly 400x wider than the moon, the moon is aproximately 400x closer to the Earth, and that is why seen from earth, sun and the moon appear to be the same size.

So answer is the sun is 400x wider than the moon, but the moon is also 400x closer to the Earth.

EXTRA:

There is a fenomenom called <em>blood moon</em>, when that happens, the moon appears to be bigger then normal (and it has a red glow about it).

5 0
3 years ago
Why do mosquitos need warm temperatures?
Andrej [43]

Answer:

That's because warmer air incubates viruses faster in mosquitoes, which gives them more time to spread them. Combine that with the fact that warmer temperatures make them hungrier for blood meals, and you've got a recipe for a potential outbreak.

4 0
3 years ago
Read 2 more answers
There are many kinds of organisms in kingdoms. Which of these organisms is in kingdom is in Protista?
lora16 [44]

Romania, and caper is not the right answer I just need someone to help me answer a question that got taken down 5 times


3 0
3 years ago
Identify the genotype for this pedigree chart
Zepler [3.9K]

Lets say that the genotypes are:


Male affected:XbY


Male unaffected: XaY


Female  affected: XbXb


Female carrier: XaXb


Female unaffected:XaXa


P: XbY  x  XaXa


F1: XaXb  XaXb  XaY  XaY The middle square is female carrier.


P:XbY  x  XaXb


F1: XaXb  XbXb  XaY  XbY The left square is affected female.


P:XaY  x  XbXb


F1: XaXb  XaXb  XbY  XbY The right square is affected male.



6 0
3 years ago
Read 2 more answers
Which of the following are contributing factors to the extinction of species?
meriva

Answer:

Deforestation

Climate Change

Invasive Species

Explanation:

Seventy percent of the Earth's plant and animals dwell in forests, and deforestation affects them directly. Once their habitat is lost, they are on their way to extinction.

Climate change also causes extinctions not only as a result of species intolerance to high temperature, but more commonly via a variety of related factors that alter a species’ interactions with other species.

Invasive species invade foreign territory. They use resources that the other species depend on. Then naturally one of the species will die off.

8 0
2 years ago
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