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musickatia [10]
3 years ago
9

Fast please! 15 points!

Geography
1 answer:
Minchanka [31]3 years ago
8 0
1. Destroying the ecosystems.
2. Destroying agricultural land and thus creating problems in food production.
3. Pollution of water.
4. Micro climate changes.
5. Pollution of air.
6. Sound pollution.
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One scientist did an experiment with a meter stick and pencil. The steps of the experiment are listed below. Hold a meter stick
Marina CMI [18]

Answer:

Parallax would be most effective in measuring distances to stars which are close to the Earth.

Explanation:

In the experiment,

  • The parallax shift would decrease as the pencil would move further away from the scientist's eye, so option 1 would be invalid.
  • the size of the pencil remains constant, so option 2 would be invalid.
  • the parallax shift can be observed when the pencil has objects in the background to provide relation, that is to say, the shift of the pencil when seen relative to background objects; therefore, if we assume that the pencil is a star nearby to the Earth, and the background objects are stars that are further away, then the shift of, and thus, distance to the nearby star can be easily observed.
3 0
3 years ago
What is the largest island of canada's atlantic seacoast?
vova2212 [387]
I think it's Newfoundland
3 0
3 years ago
What is the main religion in the shaded region?
Ipatiy [6.2K]

Answer:

Option C, Islam.

Explanation:

The shaded region is very close to regions like Arabia, Pakistan, South Africa, and more like Dubai. In these places, only Islam can be followed.

Hoped this helped.

8 0
2 years ago
It is typically easier to collect data from business owners of sports tickets than fans who use sports tickets. True or false
erik [133]

Answer:

r

Explanation:

7 0
3 years ago
it is possible for two stars to have different temperatures and different sizes but the same luminosity. explain how.
Darina [25.2K]

Answer:

Two stars (a and b) can have the same luminosity, but different surface area and temperature if the following condition is met:

(T_a^4)(R_a^2) = (T_b^4)(R_b^2)

Explanation:

The luminosity of a star is the total energy that produces in one second. It depends on the size of the star and its surface temperature.

L = σ(T^4)(4πR^2)

L is the luminosity f the star, T is the temperature of the surface of the star and R is its radius.  

Two stars can have the same luminosity if the relation between the radius and the surface temperature is maintained.  

To see this lets suposed you have 2 stars, a and b, and the luminosities of each one of them:

L_a = σ(T_a^4)(4πR_a^2)

L_b = σ(T_b^4)(4πR_b^2)

you can assume that L_a and L_b are equal:

σ(T_a^4)(4πR_a^2) = σ(T_b^4)(4πR_b^2)

Now, you can cancel the constants:

(T_a^4)(R_a^2) = (T_b^4)(R_b^2)

as long as this relation between a and b is true, then the luminosity can be the same.

6 0
3 years ago
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