Answer: Option D."Kyoto Protocol"
Explanation:
The Kyoto Protocol is the first international agreement on climate change that was originated in Kyoto (Japan) on December 11, 1997 and entered into force on February 16, 2005.
Kyoto Protocol was linked to the United Nations Framework Convention on Climate Change, that allows the commitment of parties to reduce gas emission.
In the first commitment period, the community was binded to reduce green house gas emissions to an average of five percent in comparison to 1990 levels. In the second commitment period, parties binded to reduce green house gas emissions to an average of 18 percent below 1990 levels in the eight-year period from 2013 to 2020.
Hence, the correct option is D.
A large cloud of gas (hydrogen) and dust a nebula begins to collapse
The collapsing cloud begins to spin
The spinning collapsing cloud flattens into a rotating disk
Material in the disk begins to accumulate in the center
As the material coalesces in center, it becomes dense, compresses, and heats up.
More and more material coalesces to form a protostar.
The protostar continuse to accomulate material from the surronding disk and grow.
Eventually, the protostar becomes massive enough, dense enough and hot enough to cause the process of nuclear fusion to begin.
Nuclear Fussion isotops of hydrogen atoms (deuterium, tritium) combine to form helium atoms, energy, and subatomic particles.
Once nuclear fusion begins the protostar's “ignition” to nuclear fusion creates a solar wind that drives remaining gas and dust to the outer parts of the disk.
Then the young star stops accumulating material.
Sensory neurons that carry nerve impulses from sensory stimuli towards the central nervous system and brain
