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.
Diffusion is important to organisms because it is the process by which useful molecules enter the body cellsand waste products are removed. Digested food molecules (amino acids, glucose) move down a concentration gradient from the intestine to the blood.
Biology Biology Biology
I don’t what else to say
The patellar region has a reflex (when the doctor hits your knee with that little rubber hammer and you kick your leg). Any reflex protects us from harmful things. The kneecap also covers and protects the anterior articular surface of the knee joint.
