Increased sunlight will cause increased plant growth

A researcher hypothesizes that increased sunlight will cause increased plant growth. She takes 2 plants and places them in full sun, 2 are placed in a moderately sunny environment and 2 are placed in the dark. What is wrong with this experiment?

There is no positive control

There are too many independent variables

There is not enough replication

The hypothesis is not testable 

"Is this question part of your assignment? We can help"

ORDER NOW