Answer:
The gonads are responsible for the production of steroid hormones, such as testosterone, estrogen, and progesterone.
Explanation:
The circulatory system is in charge of pumping blood and nutrients throughout the body.
Water! It is the source of all life.
So white blood cell’s(WBCs for short) main job is to fight infections.
They do this by swallowing the infection.
You see,WBCs do not have a permanent shape.this means that they enlarge and decrease size of parts of their body.So they grow two long arm like structures called pseudopodia which swallow the infection.(pseudopodia means false feet).
You can see the process in the photo I attached from google