What important consequences have resulted from changes in the chemistry of seawa
ID: 290738 • Letter: W
Question
What important consequences have resulted from changes in the chemistry of seawater?
It has influenced strongly which kinds of organisms become the dominant photosynthesizers on land.
It has influenced strongly which kinds of organisms have functioned as major reef builders and sediment producers.
It has influenced strongly which kinds of fish have evolved in the oceans and functioned as major carnivores.
There have been no important consequences in the oceans due to altered seawater chemistry.
Inspection of Archean-age rocks can be found in greenstone belts, which were created ____________.
at mid-ocean ridges
through collision of continental plates
at the time of solar system origin
at ancient subduction zones
After the energy in a star is depleted, it can become a supernova, after which material condenses and accumulates through formation of ______________.
a black hole
an infinitely dense object
a supernova
solar nebula
It has influenced strongly which kinds of organisms become the dominant photosynthesizers on land.
It has influenced strongly which kinds of organisms have functioned as major reef builders and sediment producers.
It has influenced strongly which kinds of fish have evolved in the oceans and functioned as major carnivores.
There have been no important consequences in the oceans due to altered seawater chemistry.
Inspection of Archean-age rocks can be found in greenstone belts, which were created ____________.
at mid-ocean ridges
through collision of continental plates
at the time of solar system origin
at ancient subduction zones
After the energy in a star is depleted, it can become a supernova, after which material condenses and accumulates through formation of ______________.
a black hole
an infinitely dense object
a supernova
solar nebula
Explanation / Answer
1. What important consequences have resulted from changes in the chemistry of sea water?
It has influenced strongly which kinds of organisms have functioned as major reef builders and sediment producers.
Reason: The changing chemistry of the sea water and the chemical reactions associated with these chemical changes often makes it difficult for most of the marine calcifying organisms such as some planktons and the corals and they become vulnerable to dissolution.
2. Inspection of Archean age rocks can be found in greenstone belts, which were created at ancient subduction zones.
Reason: The greenstone belts are often interpreted to represent regions of some of the ancient island arcs that form during the collision of two oceanic lithosphere resulting in the underthrusting or subduction of one oceanic plate below another.
3. After the energy in a star is depleted, it can become a supernova, after which material condenses and accumulates through the formation of : Black hole.
Reason: A really massive star becomes a neutron star or a black hole after the supernova stage. The super nova event scatters the elements produced by a star into the space and leaves behind either a neutron star or a black hole and our planets form from these.
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