Answer:
left atrium
Explanation:
The oxygenated blood is brought back to the heart by the pulmonary veins which enter the left atrium. From the left atrium, blood flows into the left ventricle. The left ventricle pumps the blood to the aorta which will distribute the oxygenated blood to all parts of the body.
It is b:<span>to prevent drying out and to lay their eggs
remember they have moist skin and lay eggs in water</span>
What dogs? if you include that then I can help you
Answer:
Front the atmosphere that's from environment