Pericardial fluid
Pericardial fluid is a serous substance
produced by the serous layer of the pericardium into the pericardial cavity. The
pericardial fluid reduces friction by lubricating the epicardial surface and allows
the two membranes to glide over each other with every heart beat.
Answer:
Explanation:
sedimentary rock
you can see layers in the rock
Answer:
That would be A. Covalent bond!
Explanation:
Since the bond formed is an ester bond, these bonds are covalent in nature and so the answer is A.!
There are no true tropic climates
The process in which organ systems work to maintain a stable internal environment is called homeostasis. ... Here are just three of the many ways that human organ systems help the body maintain homeostasis: Respiratory system: A high concentration of carbon dioxide in the blood triggers faster breathing
