The new-new kids on the block: hybrid lizards

There are many different kinds of anoles, but they tend not to mix. Females recognize the colorful, extendable neck flap of an amorous male of the same species, or the pattern of his head-bobbing dance. As a result, the Jets ...

Team discovers invasive-native crayfish hybrids in Missouri

In a study of crayfish in the Current River in southeastern Missouri, researchers discovered—almost by chance—that the virile crayfish, Faxonius virilis, was interbreeding with a native crayfish, potentially altering ...

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Invasion

An invasion is a military offensive consisting of all, or large parts of the armed forces of one geopolitical entity aggressively entering territory controlled by another such entity, generally with the objective of either conquering, liberating or re-establishing control or authority over a territory, forcing the partition of a country, altering the established government or gaining concessions from said government, or a combination thereof. An invasion can be the cause of a war, be a part of a larger strategy to end a war, or it can constitute an entire war in itself. Due to the large scale of the operations associated with invasions, they are usually strategic in planning and execution.

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