Dark Matter only: detected through its gravitational attraction, has mass, most common form of mass in the halo of the Milky Way Galaxy, likely to consist of subatomic particles
Dark Energy only: inferred to exist from the measured acceleration of the universe's expansion, the proposed source of a universal repulsive force
BOTH: the universe contains more of this than it contains matter made from atoms, we do not know what it is made of
NEITHER: blocks light from stars behind it, "dark" because it emits only infrared light

8 0

3 years ago

Explain which type of melting (flux, decompression, heat transfer) is responsible for mafic magmas in each of the following plat

qwelly [4]

Answer:

a) Mid ocean ridges

Explanation:

The mid-oceanic ridges underling the hot asthenosphere which creates a depression that causes the melting of the peridotites at shallow depths. As they rise that results in mafic magma and this only takes place at divergent boundaries.

Here the plates sperate and move away, causing magma below to rise and ill spaces of low pressure. The rocks then cool and new crust is firmed. The mafic rocks crystallize at higher temperatures and pressure.

3 0

3 years ago

The loss of ice cover in the Arctic will: A. endanger resident species. B. raise the ocean temperature. C. raise the air tempera

Sergeu [11.5K]

Answer:

E. all of the above.

Explanation:

A rise in the temperature and a loss of ice covers in the arctic will lead to the endangering of the species and will also raise the temperature of the oceanic bodies. Thereby the sea levels will also rise due to the impacts and effects of global warming and the climate changes taking place.

7 0

3 years ago

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