All matter is made of ____ which are constantly ____. These particles can move from place to place without anything moving them. This particles ____, moving from where there is ____ to where there is ____. This movement is known as ____. Single celled ____ can obtain everything they need (____, oxygen, etc) by diffusion.

लीडरबोर्ड

दृश्य शैली

विकल्प

टेम्पलेट स्विच करें

ऑटो-सेव पुनःस्थापित करें: ?