*You water some plants with 4 different types of water (salt water, regular water, sugar water and distilled water). After a two-week period, the height of the plants is measured. 1) Independent Variable (IV):
2)Dependent Variable (DV):
3)Constants:
4)Control:

Please find the answer in the explanation

Explanation:

Given that some plants were watered with 4 different types of water (salt water, regular water, sugar water and distilled water). After a two-week period, the height of the plants is measured.

1.) The Independent Variable (IV) are the different types of water

2)Dependent Variable (DV) are the height of the plant. Dependent variable depends on the independent variable.

3)Constant is the unchanged parameter which is the period - the two weeks

4)Control: is the quantity of water used.

answer: strength i guess

explanation:

1 - wave length

2 - amplitude

3 - crest

4 - trough

explanation:

duh.