The variable that researchers manipulate is the independent variable.
The reason for this is because in experiments different manipulations are often introduced. The sole purpose of these manipulations is to see whether they will affect our independent variable and if they will change its value.
The average annual temperature in a temperate deciduous forest is 10°C (50°F).
I want to say that the answer is A
10 % of $3250 are $325. So Micheal has $325 allotted to pay for housing expenses.