According to google. It is a substance produced by a living organism that acts as a catalyst to bring about a specific biochemical reaction.
Answer:
pericardium
Explanation:
A double-walled membrane, the pericardium, separates the right and left chambers, preventing oxygen-rich blood from mixing up with the one without oxygen. So, the heart functions go smoothly. Deoxygenated blood enters the right atrium.
Hi there!
The stage after Protostar would be - Sequence Star.
Hope this helps you!
~DL
Plant cells have a cell wall so answer 1
Answer:
d
Explanation:
the high pressure causes the inner core to be solid but the outer core doesn't have much pressure applied to it