[lemma=to] [lemma=the] [lemma=species] [□] □
[lemma=to] [lemma=the] [lemma=species] [□=□] □
[lemma=to] [lemma=the] [lemma=species] [□ & □] □
The most commonly recorded threat to the species that have been lost over the last 20 years is habitat loss , which had a severe impact on thirteen of these species .