I think it is the first one
C. A 50% oxygen saturation level of blood returning to the lungs might indicate an activity level higher than normal.
Answer:
go to the nearest neighborhood and ask for help
Linear B is a fascinating writing system that was used to write the Mycenaean Greek language. We don't know exactly how old it is, but it seems to have developed about 3,500 years ago. Scholars named it called Linear B because there's also an older version of it, which they call Linear A. Linguists still can't figure out how to read Linear A, and it's one of the great mysteries of classical studies.
Answer:
Just to explain, the endocrine system is pretty much made out of all the hormones in your body, responsible for metabolism, blood sugar levels, and reproduction. So this goes to number 5.
The pancreas is basically a large gland behind your stomach that secrete digestive enzymes to help digestion. But they are also responsible for the glucagon and insulin. This fits 4.
The thyroid gland is a butterfly shaped gland that is near your adams apple, which is located inside your throat. It plays an important role in metabolism, growth and more. That means it fits into 3.
Hormones is what makes a boy a man and a girl into a woman. Hormones help them grow into their adult stage. So, it is definitely in 2.
Our endorphins are the main reason we feel happy, sad, angry, or an other sort of mood. They even help with relieving pain. This fits into 6. description.
Last but not least, our pituitary gland is responsible for the "fight or flight" hormone. That way, we know when it's time to face a certain problem or run away if in danger. This goes with number 7.
I hope this helps!
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