The correct answer is (b) <span>They can be directly observed.</span>
The sun rays are received by the plants and explell oxygen and we breath the oxygen to be able to survive
In the experiment with plants being grown at different temperatures to see how it will affect a plant's growth, the control group is the plant being grown at room temperature. The experimental group includes the three plants being grown at temperatures greater than room temperature.
Answer:interactive model of any normal project
Explanation:
Answer: It is verified by testing it. If the data supports the hypothesis, then we consider the hypothesis to be verified and true. If however, the data does not support the hypothesis or refutes it, then the hypothesis is in trouble, and we have to come up with a different hypothesis to explain the observations.
Explanation: