How do fish obtain oxygen? a.
from water flowing over their gills.
b.
from water flowing over their fins.
c.
from water flowing over their lungs.
d.
none of the above.

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Fish take water into their mouth, passing the gills just behind its head on each side.

answer:   option a) glucagon was secreted by his pancreas before he ate the cookies because blood glucose was low. insulin was secreted after he ate the cookies because his blood glucose was high.

explanation:

it's the cell cycle, but cytokines is when the cell divides.

theres 3 stages interphase,mitosis,and cytokines.

interphase prepares the cell for division.

mitosis is the process of dividing the cell,it has 4 parts interphase,anaphase,metaphase,and telophase.

lastly there's cytokines,that's when the cell divides into 2 daughter cells