Metamorphic rocks are commonly formed at what kind of plate boundary?

Aparticle initially moving east with a speed of 20.0 m/s, experiences an acceleration of 3.95 m/s, north for a time of 8.00 s. what was the speed of the particle after this acceleration, in units of m/s? give the answer as a positive number.

Describe the function of the endomembrane system? what organelles are involved?

What is a neurotransmitter involved in mood reward, addiction, and motor behaviors?