Separation of populations of a species by geographic means (distance, mountains, rivers, oceans, etc.) that lead to reproductive isolation of those populations.
The act of protecting something by surrounding it with material that reduces or prevents the transmission of sound or heat or electricity. The material for this purpose.
A method of amending state constitutions, used in seventeen states, under which proposed constitutional amendments can be placed on the ballot if enough signatures are obtained on ...
Високо отровна змија од семејството елапидај родено во Азија и Африка. Кога се вознемирени, кобрата ја крева главата и ја проширува кожата на вратот ...
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