What do plants need in order for photosynthesis to occur? How could you test whether or not plants actually need carbon dioxide, water, or light in order for photosynthesis to occur? What evidence would indicate photosynthesis has occurred?

Plants need Sunlight,Water, Chlorophyll,And Carbon Dioxide for photosynthesis to occur

Explanation:

To test whether plants need carbon dioxide,water or light in order for photosynthesis,put a plant in a closet without sunlight,water or carbon dioxide.The plant soon starts to die because it's essential elements needed to survive are not available.

the answer is

a) revise existing treaties

b) do away with political alliances

c) prevent the spread of communism

d) bring an end to european colonization

the main goal of the southeast asia treaty organization was to prevent the spread of communism in southeast asia.

the answer to this question is d