In a scientific experiment, the one variable that is purposely changed to test a hypothesis is called the manipulated variable. select the best answer from the choices provided t f

True

Explanation:

In a scientific experiment, the one variable that is intentionally changed by the researcher to know the affect of such change over other variable is called as independent or manipulated variable. It is changed to perform the experiment to test the hypothesis.

The other variable which is not changed intentionally is the dependent variable.

On the basis of the above explanation, the given statement is true.

step 1 ammonium can be absorbed by plants, but some is converted into nitrates which are better for plants to absorb. this is called nitrification. 2. step 2 the deer eats the plants and uses the nitrogen-containing proteins for cell growth. 3. step 3 bacteria in the soil conduct nitrogen fixation to convert nitrogen gas from the atmosphere into ammonium. 4. step 4 some of the nitrates are absorbed back into plants, but denitrification breaks down the nitrates into nitrogen gas released back into the atmosphere. 5. step 5 nitrogen is found in the urine, which gets broken down into ammonium through the process of ammonification. 6. step 6 plants absorb the ammonium and begin assimilation, the process to add the nitrogen to protein.