Settlement patterns. Southeast Asia is predominantly rural: three-fourths of the people live in nonurban areas. Moreover, population is heavily clustered in fertile river valleys and especially in delta areas, such as those of the Mekong and Irrawaddy rivers.Most of the region's people live in the more temperate climate zones. In East Asia, for example, the coastal regions of Central and Southern China, Japan, and South Korea are primarily a humid temperate climate.

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3 years ago

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From earth, a hydrogen source releases an emission line that has a wavelength of 410nm. observations have been made for the same

lubasha [3.4K]

The explanation for the differences in wavelength observed from earth and a distant star with a shift towards the red end of the spectrum is the Redshift- Doppler effect.

<h3>What is the Doppler effect?</h3>

The Doppler effect is the difference that occur between the frequency of a wave in relation to observer from the wave source.

The wavelength changes with change in the frequency.

<h3>How does the Doppler effect explain the redshift?</h3>

As an object moves away from Earth, the waves moves to the red end of the electromagnetic spectrum and becomes elongated. This results to the increase in wavelength.

Therefore, the explanation for the differences in wavelength observed from earth and a distant star with a shift towards the red end of the spectrum is the redshift-Doppler effect.

Read more on Doppler effect here:

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2 years ago

Which type of rock tends to have ripple marks, mud cracks, and layers (strata)?

zhannawk [14.2K]

A) sedimentary rocks

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Surface area using nets Check out this rectangular prism 2 1 1 1 . 3 . 1 1 4 3

tankabanditka [31]

Answer:

Explanation:

1. Given the length, width and height find the volume, surface area and diagonal of a rectangular prism

h, l and w are known; find V, S and d

V = lwh

S = 2(lw + lh + wh)

d = √(l2 + w2 + h2)

2. Given the surface area, length and width find the height, volume and diagonal of a rectangular prism

S, l and w are known; find h, V and d

h = (S - 2lw) / (2l + 2w)

V = lwh

d = √(l2 + w2 + h2)

3. Given the volume, length and width find the height, surface area, and diagonal of a rectangular prism

V, l and w are known; find h, S and d

h = V / lw

S = 2(lw + lh + wh)

d = √(l2 + w2 + h2)

4. Given the diagonal, length and width find the height, volume and surface area of a rectangular prism

d, l and w are known; find h, V and S

h = √(d2 - l2 - w2)

V = lwh

S = 2(lw + lh + wh)

(Hope it helps)

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3 years ago