To get an average, you must add all of the numbers together, and divide that sum by the amount of numbers there are. There are 6 number, which is what we must divide by.

6.8g is the average for the set of measurements.
Answer:
Leeches have 32 brains,,,
Rose bush because not many animals eat rose bushes
Explanation:
Magnesium Chloride : MgCl2
Sodium chloride : NaCl
Potassium nitrate : KNO3
Hydrogen oxide : H2O2.
hope this helps you.
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)