Add the protons and neutrons to find atomic mass 5+4=9. the atomic mass is 9
Answer:
Eccrine gland
Explanation:
They are glands found on almost all parts of the skin, that produces sweat
Xylem tissue is the (Vascular system)
The mitochondria is the main energy-producing organlle both in plants and animals
The correct answer is endocardium.
The endocardium is termed as thin and smooth and is the innermost layer of the heart. Endocardium tissues are biologically and embryologically similar to endothelial cells which lines blood vessels.
It provides protection to valves and heart chambers. It is the muscular tissue which is responsible for contraction of the heart.
It also controls myocardial function. It acts as kind of blood-heart barrier and controls ionic composition of extracellular fluid where cardiomyocytes bathe.
