Food surpluses allowed cultures to _

Which of the following statements about a hot-spot track is correct? All of the volcanoes making up the track have erupted at ro

liberstina [14]

Answer:

D. The youngest volcano of the track occurs at one end of the track.

Explanation:

Hotspot tracks can be described as a process in which lines of islands, atolls, and seamounts are produced as plate continues to move away from the lava stream, it carries built up volcanoes with it; as these volcanoes cool and subside.

Examples are Hawaii, Yellowstone and Iceland hotspots.

7 0

4 years ago

What is the equivalent of latitude on a celestial sphere

Vaselesa [24]

The celestial equivalent of latitude is called declination and is measured in degrees North (positive numbers) or South (negative numbers) of the Celestial Equator. The celestial equivalent of longitude is called right ascension.

The Celestial Sphere :

North Celestial Pole (NCP) and the South Celestial Pole (SCP) - these are just the north and south poles extended into space.

Celestial Equator - The earth's equator, but at a much greater radius. ...

Horizon - The horizon changes depending on your position on earth.

I hope this helps

6 0

3 years ago

In deserts of southwestern North America developers often build houses in dry stream beds and build only minimal subsurface drai

lilavasa [31]

Answer:

number two is the correct answer

Explanation:

3 0

4 years ago

People living in the Sahel region in countries such as the Sudan, Chad, and neighboring Ethiopia suffer from undernourishment, d

olganol [36]

Answer: Please refer to Explanation

Explanation:

Undernourishment

This is defined as being unable to take the required amount of food and nutrients for energy that the body needs per day. This has to have gone on for a year for it to be classified as Undernourishment.

Desertification

This refers to a situation where land that was once fertile looses that fertility and instead begins to become more desert like. This is very prevalant in the Sahel region of Africa and can be caused by droughts and inefficient farming practices.

Food Security

This is defined as the access to sufficient, safe, and nutritious food at all times needed to be able to sustain the human body by meeting the minimum amount of recommended energy that the body requires to function.

The Sahel is an area immediately south of the Sahara Desert. It is semi-arid in nature and is prone to prolonged periods of drought.

When this drought occurs it tends to cause soil that was once fertile to begin to turn into a desert like soil due to the soil not getting water for such a prolonged period of time.

When there is a lot of fertile land used for farming lost to desertification then the people in those areas cannot farm and get food needed to survive. This causes Food Security issues because people do not have access to food that they require to survive.

Should this happen and the people there go through Food security crisis, they will become undernourished as they are unable to take the recommended amount of food necessary.

4 0

3 years ago

P and S waves from an earthquake travel at different speeds, and this difference helps locate the earthquake "epicenter" (where

Studentka2010 [4]

Answer:

(a) Since both P and S wave travels the same distance, so it can be written as: Δx = V₁t₁ = V₂t₂,

Where, V₁- Speed of S wave

V₂- Speed of P wave

t₁- time taken by S wave

t₂- time taken by P wave

Therefore, t₁ > t₂ (since, time taken by S wave is longer than P wave)

⇒ t₁ = t₂ + 1.5 min

⇒ t₁ = t₂ + 90 sec

⇒ V₁ (t₂ + 90 sec) = V₂ (t₂)

⇒ V₁t₂ + V₁ (90 sec) = V₂ (t₂)

⇒ V₂t₂ - V₁t₂ = V₁ (90 sec)

⇒ t₂ (V₂- V₁) = V₁ (90 sec)

⇒ t₂ = {V₁ (90 sec)} ÷ {(V₂- V₁)}

⇒ t₂ = {5.5 × (90 sec)} ÷ {(8.5 - 5.5)}

Therefore, t₂ = 165 sec

Since, Δx = V₁t₁ = V₂t₂

Now, Δx = V₂t₂ = (8.5 × 165 sec)

⇒ Δx = 1402 km

Therefore, Δx is approximately 1400 km (this means that the earthquake occurred at a distance of about 1400 km from the recorded seismic station)

(b) No, Only seismic station is not sufficient to detect the epicenter of an earthquake. Seismologists and geologists usually use the triangulation method in order to determine the exact location of the epicenter. This is possible by the use of three seismographs that are placed at three different locations nearby to that earthquake occurring position.

8 0

3 years ago

Food surpluses allowed cultures to __ more with each other.