For her science fair project, Emily conducted an experiment to investigate the effects of watering on tomato plants. She varied the amount of water given to the plants and measured each plant's height after two weeks. Emily hypothesized that the more water she added, the taller her tomato plants would be. 1. Was Emily's hypothesis correct? Explain your answer. 2. According to Emily's data, what is the optimal weekly amount of water for tomato p

C) No, because their work has not been reviewed by other scientists.

Explanation:

Although the experiment that Trey and Randall conducted does have a lot of the qualities that are needed in this type of scientific experiment, it would still not be considered valid scientific research. The two are missing an important step that is necessary for the research to be valid. They need to present their work to other scientists, who will then review it as well. This process is called peer-review and is an essential element of legitimate scientific research.

- decrease the number of plants and animals living in the water.

i believe it is-

d.) gravity pulled particles of dust and gas together to form planets.