Aantal gezegden is 1469561
varav 1407627 på engelska
Gezegde (1469561 st) ZoekCategoriën (2627 st) Zoek
Auteurs (167535 st) ZoekAfbeeldingen (4592 st)Geboren (10495 st)Gestorven (3318 st)Datums (9517 st)Landen (5315 st)
Idiom (4439 st)
Lengths
Toplists (6 st)
Denna sidan visar ordspråk som liknar "Often, we don't realize we miss infectious diseases until we have invasive species that become pests without their natural enemies. Parasites act like thermostats - when a species becomes abundant it is more susceptible to infectious diseases. The disease acts like a safety valve, keeping populations in check.".