Explanation:
Saltation: Some of the fragments of the rocks move along the bed of a stream by jumping or bouncing continuously. This process is called as saltation.
Answer:
Hypolimnion zone
Explanation:
The ecosystem of lake consists of four following zones :
1. Pelagic zone or limnetic zone .
2. Benthic zone .
3. Littoral zone .
4. Euphotic zone .
The ecosystem of the lake includes living organisms such as the animals , plants , micro organisms etc.
Epilimnion is the top layer of a thermally stratified lake .
And the Euphotic zone lies almost in the Epilimnion.
Hence ,
Hypolimnion zone does not belong to region in a lake ecosystem .
Answer:
Option: b. Feed basaltic volcanoes (composition similar to the seafloor), unless the hot spot is altered in composition coming through a continent, in which case the volcano may be more andesitic.
Explanation:
Most volcanoes found in the plates boundaries but some situated in the centre of the plates. These volcanoes formed over a hot spot where mantle plume is rising in the form of magma. Hot spots are found in the ocean, and on continents.
Hot spot volcanoes occur far from plate boundaries because mantle plumes exist below the tectonic plates. Volcanoes in the Hawaiian Islands and Yellowstone National Park are some of the examples of the Hot spots.
South America and the western United States became more accessible for trade in the early 1900's. This was because of the opening and building of the Panama Canal.
