The skin is an example of a non-specific defense.
For example, bacteria or diseases have trouble entering a healthy person's skin because it is formed by closely packed cells with multiple layers and a substance called keratin that protects is.
On the other hand, the immune system is a specific defense mechanism.
When bacteria is able to enter the body in cases of fever for example, the immune system is activate and sends out protector cells such as the white blood cells to combat infection.
Did you ever figure out the answer to this? I have the same question and don't know the answer.
I’m pretty sure it’s either D or A
Explanation:
the sky to become part of a cloud which will float off with the winds, eventually releasing water back to Earth as precipitation
