They kill crocodiles for their skin.  1.A lot of crocodiles are killing for their skins.
2.A lot of crocodiles are been killed for their skins.
3.A lot of crocodiles were killed for their skins.
4.A lot of crocodiles are killed for their skins.​

Iopened the door quietly,then stood in the doorway rewrite using ..ing participle

The rich natural resources made the sacramento valley a "garden of eden." permanent villages were established about 8,000 years ago.which choice combines these two sentences from paragraph two to achieve a coherent flow of ideas? a) the rich natural resources made the sacramento valley a "garden of eden" and permanent villages were established about 8,000 years ago. b) permanent villages were established about 8,000 years ago and the rich natural resources made the sacramento valley a "garden of eden." c) the rich natural resources made the sacramento valley a "garden of eden; " and so the permanent villages were established about 8,000 years ago. d) because of the rich natural resources which made the sacramento valley a ‘garden of eden,’ native americans established permanent villages there 8,000 years ago.

Electronic cover letters are longer than traditional paper cover letters.