Answer:
the answer is C non-specific immunity
Explanation:
Trace fossil because a trace fossil is a fossil of a footprint, trail, burrow, or other trace of an animal rather than of the animal itself.
<span>Bones are linked together at skeletal joints by </span>cartilage I believe.
There are three types of hazards
- physical such as knives, filet bone
- chemical such as cleaner, chlorine (chemical substances)
- biological such as bacteria, mold (live organisms)
Because filet bone is a physical hazard the answer is D (filet bone)
