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Murrr4er [49]
3 years ago
11

What is the age of the Earth and how was this determined

Geography
1 answer:
Karolina [17]3 years ago
4 0

Answer:

the earth is around 4.54 billion years old, it is determined by the rocks in the crust.

Explanation:

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which of the lettered choices in the soil profile above represents the region with the greatest concentration of organic materia
Rina8888 [55]

The uppermost part of a soil profile is also called the organic layer which is enriched in organic materials. Hence, the region with the greatest concentration of organic material is the Top layer(A)

  • The Upper layer of a soil profile consists of materials such as <em>plant roots, bacteria and fungi</em> which constitutes it's richness in organic materials.

  • These layer is usually very dark and plants derive a lot of nutrient ’s required for growth here.

Hence, the top layer has the greatest concentration of organic materials.

Learn more : brainly.com/question/25473100

7 0
3 years ago
What is the smallest angle of rotational symmetry that maps a regular octagon onto itself?
storchak [24]

The smallest angle of rotational symmetry that maps a regular octagon onto itself would be 45°.


360/8 = 45



7 0
3 years ago
Which is not an obligation of citizens to their country? to obey laws to pay taxes to serve in the military to stay within borde
lions [1.4K]

Answer:

C. to serve in the military

Explanation:

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4 0
3 years ago
Read 2 more answers
Find the equation of the line passing<br> through the points (3, -2) and (4, 6).<br> y=[?x +[]
uysha [10]

The line equation : y=8x-26

<h3>Further explanation</h3>

Given

The points (3, -2) and (4, 6)

Required

Line equation

Solution

General formula

y-y1 = m(x-x1)

or

y = mx + c

Where

m = straight-line gradient which is the slope of the line

x1, y1 = the Cartesian coordinate that is crossed by the line

c = constant

The formula for a gradient (m) between 2 points in a line

m = Δy / Δx

Input given values in formula :

(3, -2⇒)x1, y1

(4, 6)⇒x2, y2

\tt y-(-2)=\dfrac{6-(-2)}{(4-3)}(x-3)\\\\y+2=8(x-3)\\\\y=8x-24-2\\\\y=8x-26

6 0
3 years ago
Which type of air mass was most likely located over atlanta, georgia?
Bas_tet [7]
The answer is <span>continental tropical.   The </span>type of air mass most likely located over atlanta, georgia is the continental tropical. <span>The air has low dewpoints and warm to hot afternoon temperatures but with mild nighttime temperature.</span>
6 0
3 years ago
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