Answer:
The major function of the immune system is to protect the host from environmental agents such as microbes or chemicals, thereby preserving the integrity of the body.
Explanation:
Answer:
1. extrusive igneous rocks
2. intrusive igneous rocks
3.organic sedimentary rocks
4. clastic sedimentary rocks
5. chemical sedimentary rocks
6. metamorphic rocks
I am not really sure if this are the answers but i hope they are. If they are, please tell me.