Answer:
1. They usually host three or more ecosystems where animals can’t live.
4. They usually host one ecosystem with a variety of plants
Explanation:
A mountain ecosystem has more than one ecosystem. This is mainly due to the diversity of climate that this environment promotes. Due to its proximity to the ocean, slope and elevation, the mountain ecosystem promotes different areas that create different ecosystems, some more humid and others drier.
In this environment there is usually a wide variety of plants, but not animals.
Glaciers that form high up in the mountains are classified as alpine.
Answer: B. Alpine.
I believe it would be Istanbul in Turkey
Answer:
(A) It connects Western and Central Europe.
(C) It is an important trade route.
(D) It is used for transportation.
Explanation:
The Danube is a river in central Europe and the second longest in this continent (the first is the Volga), which flows mainly through ten countries (Germany, Austria, Slovakia, Hungary, Croatia, Serbia, Romania, Bulgaria, Moldova and Ukraine) to finally flow into the Black Sea.
This river is of great importance for Eastern Europe because its channel serves as an international bridge for agricultural, fishing, tourism, commercial and industrial activities. In addition, the majority of the population that lives in its vicinity, depends on the water of the Danube to carry out its activities, which is why there is a large number of reservoirs and dams on its way.
Another important aspect is that the Danube has a high economic potential, due to its capacities for transport, commerce and tourism, so the use and use of its waters has been promoted.
Scientists believe that increased pollution may cause global warming because pollution includes greenhouse gases, which trap heat in the Earth’s atmosphere.
Option B
<u>Explanation</u>:
When the average temperature of earth increases and rises continuously above the normal value for a long period of time the it is referred as global warming.
Human beings are major cause in increasing pollution by various means whether its chemical industrial metallic or any other type of pollution. The major contributing factor in aiding pollution is the smoke from factories or vehicles which increases the carbon dioxide level above normal and when these gases rises they are trapped inside the earth surface and produce a green house effect. This is the main reason that scientists think aboutglobal warming.
