A student wanted to test the effects of adding nitrogen to soil on plant growth. He adds different amounts of nitrogen to the soil of three identical plants. He does this for three weeks. The results are shown. Amount of Nitrogen Added (mL)Plant Growth (cm)amount of nitrogen added. plant growth0 mL 1 cm5 mL 1.2 cm10 mL 2.4 cm15 mL 3.6 cm20 mL 4.8 cm1. Which graph is the best choice for summarizing the data results? (line/bar?)2. What is the independent variable?3. What is the dependent variable?

b. regulated is the actual answer to your question.

explanation:

succession returns a disturbed

ecosystem to a more stable state. this is also classified into two (2) types:

primary succession and secondary succession. the primary succession arises when

a new land is transformed and a bare rock has been exposed providing an environment

that can be occupied for the first time. while, secondary succession occurs

when a previously occupied environment was disturbed that kills much of all its

community

explanation: