<span>Those based on observation, measurement, and reason.</span>
Bog soils are type of soils which are <span>poorly drained type that are found on top of peat ( topmost coal) and under a swamp environment. Although, these types are watery in nature, there is still a high percentage of organic matter in them like ordinary soils. Hence the answer is B. organic matter</span>
Answer:
The correct answer is oxygen was produced by photosynthesis.
Explanation:
During the process of photosynthesis carbon dioxide is consumed and oxygen is released in presence of sunlight.
when plant is placed in the yellow solution and kept in sunlight the plant undergo photosynthesis.As a result the yellow solution in the tube in presence of sunlight turns blue because oxygen is released by reduction which is responsible for the blue coloration of the solution.
On the other hand the plant that is placed in dark unable to undergo photosynthesis due to which there is no change in color.
