'Many XXX of creatures are becoming extinct, or are suffering steep decline in numbers. The diver-sity of XXX is necessary for the functioning of ecosystems, and in some cases endangered XXX contribute to the human food chain (eg honey bees)...'
The word which fits best is 'species'.
Thea
14 days agoIdella
22 days agoRaina
23 hours agoLuis
5 days agoMelita
10 days agoAlaine
25 days agoJenelle
26 days agoZoila
14 days agoLetha
1 months agoMalissa
15 days agoUna
16 days agoSheridan
2 months agoIsabella
2 months agoBeula
2 months ago