Temperatures hotter than the sun are naturally produced inside the earth.

true
false

true.

temperatures within the earth are hotter than the sun. this energy is galled geothermal energy produced by the inside of the earth which can be used as a renewable resource used to heat buildings or generate electricity.

i think the answer is gold im not entirely sure

blood enters the heart through two large veins, the inferior and superior vena cava, emptying oxygen-poor blood from the body into the right atrium of the heart. as the ventricle contracts, blood leaves the heart through the pulmonic valve, into the pulmonary artery and to the lungs where it is oxygenated.