2.
Microparticle are tiny particles which are ... between 1 and 1000 micrometers in size.
A
organs
B
very small
C
approximately
3.
Biodegradable is a substance or chemical that can be changed by the action of bacteria to a ... state that will not harm the environment.
A
natural
B
flowing
C
happier
4.
The digestive system is the series of ... inside the body that process food.
A
actions
B
fluid
C
organs
5.
Fungi is the plural of fungus, a living thing similar to a ... without leaves, flowers or green coloring, that usually grows on plants or on decaying matter.
