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Elements in the group one (i.e. alkali metals from lithium to francium) exhibit metallic bonding: the positive nuclei are held together thanks to the attraction to delocalised electrons. As the number ...

Is it the verb 'avoir' or the preposition 'à'?

To know which one to choose there is an easy question: can I say 'avait' instead of a/à? If the answer is yes, then it's the verb and it doe...

The majority of French verbs are take a conjugated form of the verb 'avoir' (to have) when forming the perfect tense, similarly to English. However, there is an important minority of verbs that use a c...

Prokaryotes do not have a membrane bound nucleus, eukaryotes do.

Prokaryotes have plasmids.

Prokaryotes have smalled ribosomes than eukaryotes.

Eukaryotes have...

The liver is supplied by the hepatic artery bringing oxygenated blood to it. The liver is also supplied by the hepatic portal vein. This brings the absorbed nutrients from the small and large intestine...