Which part of a tree ecosystem would provide nesting materials for a bird or squirrel? hollow ,tree trunk or twigs and leaves

What substance is the most acidic. lemon juice. tomato juice. sodium hydroxide. water

Most enzyme names end in the

Which pair of sentences is describing the same velocity? a. a car is parked. a car is moving in circles. b. a bus drives 40 miles per hour north. a truck drives 50 miles per hour north. c. a boy walks east at 6 kilometers per hour. a girl walks west at the same speed as the boy. d. valerie rides her bike south at 8 kilometers per hour. owen jogs south at 8 kilometers per hour.