A systematic and organized way of presenting elements in increasing atomic number.

A type of boundary which formed when two plates moved toward to each other.

The thinnest layers of Earth.

It is an arc around the pacific ocean where many volcanoes and earthquakes are formed.

It happens when a material takes in light and converts into different forms of energy.

Type of electromagnetic wave which can pass through several opaque materials such as human body tissue

During photosynthesis, energy from light is collected by light absorbing molecules in the leaves of plants called __________

It is a yellowish fluid part of the blood that makes 55% of the bloods volume.

It is a tabular structure that allow fast blood to flow from one organ to another.

It focuses the light to the retina.

The emitted light is usually a product of a series of chemical reaction in a general process is known as _________.

It is a huge collection of wavelengths of light.

It is a small but important area in the center of the retina. it is responsible to see the text or object clearly.

It is the opposite of virtual images.

A dome shape muscle that contracts and relaxes as we breathe.

It consist of positively charged particles.

He discovered neutrons.

It is a smooth, flat reflecting surface.

Immunity cell involve in protecting the body against infectious agent and foreign body.

A tiny sacs like structure which the specific site for the gas exchange.

This is organism that decompose living organism that have died.

It represent the eating and feeding relationship between organism.

It is a component which refer to the living environment.

It is found at the center of the atom.

This is the location below Earth’s surface where the earthquake originates

What is PFZ?