It is the bottom layer of the skin. 

Your skin contains tubelike structures called _____.

It serves as a waterproof barrier against external damage, dirt, UV rays, and pollution. 

It is the middle layer of the skin. 

_____is a pigment produced by a special group of cells called the melanocytes. 

It contains he blood vessels, nerve endings, connective tissues, hair follicles, oil glands, and sweat glands. 

Muscles that can be controlled by your own will are called _______. 

Smooth muscles are another type of 

The walls of the heart are composed of striated _______muscles that pump blood regularly and involuntarily throughout the body. 

The upper portion of the skull that protects your brain is called the ______.

The rib cage contains ____pairs of bones called the ribs.

The yellow bone marrow is composed mainly of fat tissues that serve as an _____source. 

Joints make many body movements possible. They have ____that covers the surface of the bones at the joint. 

The point where two bones meet is called ____.

Surrounding the joints are tough, elastic bands of connective tissues called ______. 

These are cube-shaped bones that provide stability and have little or no movement. 

_______are mostly made of proteins and minerals such as calcium and phosphorus. 

Basic unit of life. 

It is made up of a single cell. 

Humans and animals are ______.

To produce salt, salt makers apply the ______ process, which leaves the salt behind after the water evaporates.

It is the process of separating the heavier components of the mixture from the lighter components with the help of the wind. 

A _____is a kind of sieve often used to separate solids from liquids. 

The filtered water or liquid that passes through a filter is called a ______.

A mixture of very small liquid/or solid particles dispersed in a gas, such as air.

Smog is a heterogeneous mixture made up of smoke and fog. 

An emulsion is one of the most common types of colloid. 

______mixtures are large  enough to be seen and are easier to be separated. 

It is the simplest form of matter.

A mixture is formed when two or more combined materials still retain their own compositions.