UnScramble this Word: w s e t d i b a?

Questions

The Hirudo leech lays its babies within a cocoon; the Amazon leech carries its babies on its ---------- - sometimes as many as 300.?

The average ---------- moves at a rate of approximately 0.000362005 miles per hour.?

Ninety percent of all species that have become extinct have been ----------?

---------- are the largest of the minnows - it's a big family, including over 300 American species, mainly small freshwater fishes. True minnows (family Cyprinidae) are soft-rayed fishes with teeth in their throats only.?

The horned lizard of the American southwest may squirt a thin stream of ---------- from the corners of its eyes when frightened.?