Question

vart ke bividya me ekta kese he
​

Answer 1

Answer:

Acceleration is the rate of change of velocity. Usually, acceleration means the speed is changing, but not always. When an object moves in a circular path at a constant speed, it is still accelerating, because the direction of its velocity is changing.

Answer 2

Explanation:

a process by which living things produce energy from food. Respiration usually needs oxygen