Answer:
I would say C, but if not then definitely D. Because energy is transferred through the environment or could be said as flows.
Explanation:
The heart helps fight diseases by sending signals to either the pituitary gland or the microglia acts as a 1st responder once it senses an attack. it does this by boosting production of a molecule PCTR1, helps WBC's kill invading bacteria..
ANSWER: The new file option
Explanation:
Sit up have both an upper body and lower body rating
