In scientific inquiry, observations can be made in many ways. This includes by using the senses, or performing an experiment.
<span>Some bacteria in the soil fix nitrogen into useful forms for plants to use them. This conversion of nitrogen helps plants grow. Without the bacteria in the soil a lot of the plants would not be able to grow.</span>
Answer:
I think it is D. A forest fire
The temperature of tropical areas relative to places more distant to the equator. Another reason why is higher nutrient cycling, which is also an effect of higher temperature.
Answer: D
They often occur spontaneously, because when energy is released during a chemical reaction it does not usually happen slowly.