The process of eating and being eaten.

The largest artery in the body.

A boy sits on a grassy slope. What force stops him sliding down?

Which of these is the unit for intensity?

What valve is found between the right atrium and right ventricle?

A continuous movement of water on, above and below the Earth’s surface.

The study of plant.

It is a heart condition that often causes pain or tightness in the chest area sometimes accompanied by indigestion

A stick partly submerged obliquely in water appears to be bent at a point where it enters the water surface. Which one of the following gives explanations for this observation?

An instrument used to identify the wind direction.

. A butterfly sips the nectar of a flower. The flower is pollinated by the butterfly. What type of relationship is shown by the butterfly and the flower?

The amount of matter an object has.

Which of these is the unit for frequency?

   A lobe that is responsible for many aspects of vision.

A process of changing phase from solid to gas.

Which of the following organs pumps the blood throughout the body?

When Diana looks outside the window, she observes that nimbus clouds are present in the sky. This indicates that there will be ______________.

Unlike light, sounds cannot be propagated through ______.

Ana drops the stone from the building and it falls to the ground. What

    force is shown in this situation?