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Semi-colons should be used in order to join together two independent clauses together in order to show closely related ideas, for example: "My dad plays the ukulele and my brother plays the flute; I ...

1. Igneous rocks are formed by cooling and solidifying magma underground or lava on the surface. 

2. Igneous rocks consist of interlocking crystals. 

The verbs that take sein in the past tense are usually (there are some exceptions) verbs that indicate a change of state or movement. For example, fahren is referring to movement, so you'd say ich bin gef...

Water is a highly ordered material. When something dissolves in water, some of these O-H bonds are broken. This requires heat energy. The water molecules can then form attractive interactions to solute io...

It is best to approach this question in parts, then combine the parts to find your solution. This question may be split into parts, as follows: Firstly, if a = 5, then a² = 5² = 5 x ...