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3 years ago

True or false scientists compared minerals and fossils from Africa and South America and found they did not match at all.

Geography

1 answer:

ValentinkaMS [17]3 years ago

6 0

I believe this is true.

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When people are united by common history and culture, they belong to a

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Answer:

B. Nation

Explanation:

B is the best answer here because culture, nationality, history, and ethnicity are all directly tied to one's country (nation). Territory and boundary are not as specific, and state is too narrow.

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3 years ago

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Water resources are finite, meaning that resources are __________. A. endless B. increasing C. limited D. nonrenewable

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the answer is c, limited

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Suppose that two stars in a binary star system are separated by a distance of 60 million kilometers and are located at a distanc

olya-2409 [2.1K]

Answer:The angular seperation is $\theta =3.6\times 10^{-4}$

Explanation:

For two objects separated by a distance 's' and at a distance 'd' from the observer the angular separation ignoring the physical effects is given by

$\theta =\frac{s}{d}$

In the given question

$s=60\times 10^{6}km$

$d=180$ light years

We know that in 1 light year there are $9.5\times 10^{12}km$

Using the calculated values we get

$\theta =\frac{60\times 10^{6}}{9.5\times 10^{12}}\\\\\theta = 6.315\times10^{-6}radians$

Since π radians equals 180 degrees thus we have

$\\\\\theta =\frac{6.315\times 10^{-6}\times 180}{\pi }degrees=3.6\times 10^{-4}degrees$

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3 years ago

Which event occurred approximately 4.6 billion years ago?

Ad libitum [116K]

Earth was created 4.6 billion years ago

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3 years ago

The year to year presence of glaciers indicate................ ?much oftheyear

garik1379 [7]

Answer:

Increasing of temperature.

Explanation:

Glaciers are substances carried by melted ice. And the presence of these indicates increasing of CO2 which leads to increase of temperature

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