The HIGHER the temperature at which magma cools: the smaller the crystals and the more felsic the composition
the larger the crystals and the more felsic the composition
the larger the crystals and the more mafic the composition
the smaller the crystals and the more mafic the composition

he larger the crystals and the more mafic the composition

Explanation:

Temperature at which minerals crystallize can determine the nature of composition of the rock and the crystal sizes.

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it is very hard for the climatologists to precisely predict how will the global temperatures be changing so there's lots of models, some of which differ significantly, this is due to multiple factors, and probably the most important is the human activity.

humans have been a key factor in climate change around the globe since the start of the industrial revolution, and in the past few decades the consequences are becoming more obvious. there's lots of emission of pollutants in the atmosphere as well as changing the environment on the surface itself, so it's really hard to predict how will that go in the future because there's some countries that are reducing the damage and are going towards green energy, while others are stubbornly continuing with pollution and damages to the environment.