Problem 1 150.0
Clams
112.5
75.0
37.5
0
0
12.5
25.0
37.5
50.0
Problem 2 400
Volume ml
300
200
100
0
-50
-25
0
25
50
Temperature degrees Celsius
75
100
Problem 3
1st Ionization Energy (volts)
30.0
22.5
15.0
7.5
0 0
5
10
15
20
6
8
Atomic Number
Problem 4 90.0
Number of Tadpoles
67.5
45.0
22.5
0
0
2
4 ph of Water
Questions: Problem 1 The number of clams is the dependent variable. The water temperature is the independent variable. The optimum temperature is 30 celsius. Problem 2 Volume is the dependent variable. Temperature is the independent variable. Problem 4 The dependent variable is the number of tadpoles. The independent variable is the pH of the water. The average pH is 6.75. The average number of tadpoles is 57.7. The optimum pH for tadpole development is 6.5. The greatest change occurs between 8.0 and 7.5. Approximately 11 - 12 tadpoles.