Answer:
How does the Nervous System interact with the Skeletal system? The brain in the nervous system controls the position of bones through muscles and sensory receptors in joints between bones send signals about body positions to the brain. … The nervous system regulates he speed that food moves through the digestive tract.
Explanation:
LD50 is used to express TOXICITY OF TOXINS AND POISONS.
LD50 stands for Lethal Dose 50. This is the standard measure of the toxicity of a material, which will kill half of the sample population of a particular test animal in a defined time period, when they are exposed to the material.
Answer:
The oxygen molecule O2 is considered a molecule but not a compound. This is because O2 is made of two atoms...
Enzyme- they are also known as natural catalysts.
Out of the options I would have to say Penetrating Keratoplasty, I am not sure
