Freshwater leeches attach to fish and suck blood from the fish to extend periods of time. this results in sores on the fish that often become infected . this relationship is best described as?

Hydrogen and helium are both members of?

Which of the following is not a means to accelerating? question 4 options: a)increase speed b)remain still c)decrease speed d)change direction

Which of the following is a true statement about the acceleration ~a of the pendulum bob ~a is equal to the acceleration due to gravity. ~a is perpendicular to the bob’s trajectory. ~a is equal to the instantaneous rate of change in velocity. ~a is tangent to the bob’s trajectory.