Answer:
Your bloodstream.
Explanation:
The cells in your pancreas produce insulin which needs to be sent to the rest of your body to tell your cells to take in glucose (sugar) for energy. In order to get sent out of the pancreas' cells, the insulin needs to go through your bloodstream.
by experimenting the layers of the earth
<span>The correct answer is b. Option a is incorrect because these models can demonstrate scientific theories, but they don't prove scientific theories (you would need experiments for that). Option c is incorrect because the models aren't always representing something abstract (i.e. DNA is very real, just very small). Option d is incorrect because they don't precisely mimic something in nature, but instead help us visualize something in nature that is difficult to see or comprehend.</span>
hope this helps
I do think that they close to not allow too much of either water or air from entering.
the hollow tube allows water to flow easily.
https://www.bbc.co.uk/bitesize/guides/z28g7p3/revision/1
Cell membrane is like doors and windows!!
if you know how; comment !
