Answer: Option A.
It is called specie- area relationship.
Explanation:
Specie- area relationship in ecology describe the relationship between the area or habitat and the total number of species present in the area. It is also called species-area curve.
A larger area will contain a larger number of species.
A lot of factors determine the slope and elevation of specie-area relationship and they are, immigration and extinction rate, predator- prey dynamics, rate of disturbances between large and small area e.t.c.
Answer:
water is an example of a renewable resource
Explanation:
this is because water is always present in the environment and will not run out in comparision to coal, oil and gas.
Answer:
The correct answer is - mutualism.
Explanation:
Like it is given here, The coral gives a protected environment for algae and other compounds algae required for photosynthesis. Photosynthesis performed by the algae provides a byproduct of microscopic algae.
These algae produce oxygen and help the coral to remove wastes and algae is important to the survival of the coral animals, which use the energy to extract calcium from the seawater and build their calcareous skeletons.
The polar jet stream expresses seasonal change. <em>The change in the </em><em>polar jet stream</em><em> from summer to winter position causes </em><em>cooler temperatures</em><em> farther south and causes </em><em> storms</em><em> to move more rapidly. Option 4.</em>
<h3 /><h3>Jet Streams</h3>
- A jet stream is a strong and narrow air stream concentrated along the horizontal axis in the troposphere.
- The stream wide is about 200 km, and its thickness ranges between 5,000 and 7,000 m.
- The strongest winds are in the central region of the stream, known as the jet core, with a speed of about 120 km/hour.
<h3>Types</h3><h3 />
- There are five jet stream types.
- Two polar streams ⇒ one of them in the northern hemisphere and the other one in the southern hemisphere.
- Two subtropical streams ⇒ one of them in the northern hemisphere and the other one in the southern hemisphere.
Both of them are west streams. And the polar ones are stronger than the subtropical ones.
- The tropical stream that comes from the east.
<h3 /><h3>Polar Jet Stream</h3><h3 />
- In the northern hemisphere, the polar jet stream affects mainly the Iberian peninsula.
- It gets formed in the convergence region, where the cooler winds from the Pole and the warmer winds from the Equator meet.
- This stream surrounds the Earth making several waves on its course.
- It occurs a seasonal balance between the winter and summer
→ Winter ⇒ The polar jet stream places between 35 and 40º latitude.
→ Summer ⇒ The polar jet stream is placed at about 50º latitude.
Following this seasonal change, from summer to winter cooler air masses reach lower latitudes and might be the cause of severe winter storms.
According to this framework, we can assume that <em>the </em><em>change</em><em> in the </em><em>polar front jet stream</em><em> from summer position to winter position causes </em><em>cooler temperatures</em><em> farther </em><em>south </em><em>and causes </em><em>storms</em><em> to move more rapidly. </em>
The correct option is (4).
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You can learn more about the jet streams at
brainly.com/question/12208637
brainly.com/question/861519
Answer: b. only open economies
A closed economy is a self=sufficient economy and does not need trade activity with outside economies. There are no imports and exports.
An open economy is its opposite. It is the type of economy which interact with other economies.
<span>Trade exists in many forms like managerial exchange, technology transfers, and all kinds of goods and services. Economic advantages for citizens of a country with an open economy: 1) Consumers have larger variety of goods and services from which to choose and 2) they have the opportunity to invest their savings outside the country. </span>
