Preserved food Unit 3

Fresh food is spoiled by_________.

• bacteria

• illnesses

• break down

Food preservation helped to increase the human

___________.

• population

• activities

• jobs

People also were able to ___________ in one place instead of moving around to find their food.

• settling

• settled

• settle

After people learned how to preserve food, they became

_________.

• faster

• healthier

• more intelligent

In the past, many cultures used these methods of preserving food without

_____________how they worked.

• understand

• understood

• understanding

You can also preserve food by adding salt or _______ to it.

• pepper

• sugar

• acids

Preserving food can be done by heating, freezing,

drying

, or _________the food.

• fermenting

• cooking

• pouring

This requires controlling the______ of bacteria.

• grown

• growth

• growing

More recent inventions that preserve food include ____________.

• canning and freeze-drying

• can and freeze

• salty and freeze

Early humans solved this problem by __________ food

• cooling

• heating

• preserving