When a virus first enters our body, in order to defend itself, the body must first recognize what the antigen is in order to fight it through <u>antibodies</u>. Once it does it will keep a memory of it that it can use if this virus enters the body again. <u>This will be done through the secondary immune system</u>.

As the body already recognizes the antigen, it knows how to fight it immediately, generating a thousand times the amount of antibodies generated the first time.

Thanks to its memory cells, the virus will remain much less time in the body.

8 0

3 years ago

A Gazelle Is Born with a slightly longer legs which allow it to work faster than the other gazelles in the herd . This adaption

Crank

Well maybe that species evolved over time to get faster and be more durable because of the need to run away from lions and other prey.

4 0

2 years ago

Give a specific example of motion

elena55 [62]

Answer:

running

Explanation:

you are moving with your legs.

7 0

2 years ago