There are 4 cal. in a 1 gm carbohydrate. 9 cal. in 1 gm of fat. 4*14 would give the answer.
Answer.its C babe
Bc if you think back at the question it’s most likely for the mask to prevent coughs ect.
An electron microscope uses a beam of electrons in order to see very small and detailed components. These electrons are in fact negatively charged particles.
This type of microscope would allow you to see small components such as ribosomes and other organelles inside a cell.
Therefore, your answer is B. Electron Microscope.
I would say a because he ran too much but that would be just me I think he hurt his knee from running too much more exercise but probably just aggravate his condition I could be wrong but this is what I think
