Sources of food 3NT

Respiration

Decomposition

Photosynthesis

Digestion

Water, sunlight, chlorophyll, carbon dioxide

Water, sunlight, chlorophyll, oxygen

sunlight, chlorophyll, carbon dioxide

Water, chlorophyll, oxygen

Sugar, carbon dioxide

oxygen, carbon dioxide

water, sugar

carbon dioxide, water

starch

protein

vitamins

mineral salts

blue, red

red.blue

blue, pink

pink, red

red, blue

blue, red

pink, blue

blue, pink

less than 7

equal 7

more than 7

more than 14.

For crops to grow bigger and faster.

To protect crops from pest.

Improve plant growth and crop yield.

So that crops do not decompose.

Contamination of the main source of drinking water

pollute water and poison aquatic plants and animals

Causes algae boom in lakes and river

Fishes grow bigger after eating the fertilizer.

Cutting down the crops and setting the land on fire.

Cutting down the crops and let the crops rot on the field.

Burning away all the crops

Use machines to clear all the crops.