Nitrogen fixation, N2 --> NH3+, is not something that plants to by themselves but some plants have bacteria that does this. I believe that pea plants have these, but I'm not 100% sure.
Answer:
<h3><u>2</u><u>4</u><u>0</u><u> </u><u>is</u> the answer</h3>
The cause of the change in insect characteristics occurred when a few survivors of the 1st spray became resistant to the insecticide. When they had offspring, those insect babies are born with the trait that made them resistant to insecticide. This occurs when the parents pass on the trait to their offspring. The end result is that the insecticide is less effective and more insects survive.
The first is reflection of moonlight
Yes an organ can belong to more than one system because the organ system is the digestive system.
