The u-shaped valley produced by the erosion of a valley glacier is called

The u-shaped valley produced by the erosion of a valley glacier is called glacial troughs. they are formed by glaciation. They have a characteristic U shape, with steep, straight sides and a flat bottom. Glaciated valleys are formed when a glacier travels across and down a slope, carving the valley by the action of scouring.

A GLACIAL TROUGH:):):):):):):):):):):))::)):):):

A Scientific experiment is designed in such a way that it should test the hypothesis.

The experiments contain three types of variables: independent variable-which can be manipulated, dependent variable- which has to be tested and the constant- which is kept constant throughout the experiment.

The scientific experiment can be categorized into two samples: the experimental group in which the dependent variable is tested and the control group in which the dependent variable is not present.

Therefore in the given question

1. independent variable- the amount of water which was changed throughout the experiment.

2. dependent variable- the endurance power measured.

3. hypothesis- If more water is consumed, then more endurance is observed in athletes.

4. Control group- No control group was included in the experiment.

5.  Experimental group- the groups who drank water before practice

6. Constant- the number of players and water consumed per week.

7. The problem is that it lacked the reference group or control group which will provide the data to compare with.