The correct options are:
- Matter is made of small particles.
- Matter's particles are in constant random motion or vibration
- There is empty space between matter's particles.
Anything which has mass and occupies shape is a matter. Matter is composed of particles. The particles of matter are very small in size and they attract each other. There is space between the particles. The particles are in continuous random motion, thus they have kinetic energy. on absorbing energy their movement increases.
Answer:
Red blood cells are formed in the bone marrow and destroyed in macrophages.
Explanation:
The net force on the ball = Force+ frictional force
=22.8-2.3 = 20.5N
Calcium in the teeth provides appropriate pH levels in the mouth.
