Answer:
Oxygen
Explanation:
The heart, like any organ, requires blood for oxygen and other nutrients so it can do its work. The heart does not gather oxygen or nutrients from the blood flowing inside it. Instead, it receives blood from coronary arteries that eventually carry blood into the heart muscle.
Change in gene frequency of ancient cockroaches led to the evolution of modern cockroaches.
Answer: ATP
Explanation: ATP molecules can be made per oxidized<u> glucose molecule during cellular respiration</u> (2 from glycolysis, 2 from the Krebs cycle, and about 34 from the electron transport system).
Spinalis thoracis extends the spinal column
If your asking how kitchen tools avoid rusting the answer is to maintain them dry after use or buying stainless steel that contains chromium which helps the metal protect it from rusting