Answer:
Option 2, Injection into a large muscle with the use of the Z-track method
Explanation:
The z-track method is used for parenteral iron preparations to avoid tissues from staining and irritation over the air lock method. Z track method prevents the leakage of medicine beneath the skin. In this method, after injecting the medicine the muscle and skin is pulled first and the injection is pulled later. This forms zigzag line that prevents medicine from leaking. Generally injected at thighs and buttocks
Hence, option 2 is correct
Answer:
population level
Explanation:
it ocurrs at the population level as scientists requires genetic variation between individuals of a population for natural selection
The last one, " Scientists predict a volcano will erupt based on current volcanic activity." This one is false because they actually predict a volcanic eruption by the volcanic waves and other complicated things.
Answer:
differentiation
Explanation:
acquiring special features especially during embryo development
