Carbon dioxide is emitted into the air from cars burning gas as well as many other toxins we breath everyday.
Answer: Most people probably grew up being told it was 98.6 degrees Fahrenheit (or 37 degrees Celsius). That widely accepted number originated from a study done in the mid-1800s. But newer studies suggest the average person today actually runs a little cooler than that – somewhere between 97.5 F and 97.9 F.
Arteries Larger, more muscular and more elastic, carry oxygenated blood from the heart, with the exception of the pulmonary artery. The blood has more pressure from the heart. Veins Under less pressure, so valves are needed. They are less strong than arteries and appear more floppy.
Arteries have thick, elastic, muscular walls whereas veins have thin walls with few elastic fibers. Arteries need these properties to give them the strength and elasticity needed to cope with the high pressure surges of oxygenated blood coming from the heart. Veins carry blood back to your heart from the rest of your body. The pressure of the blood returning to the heart is very low, so the walls of veins are much thinner than arteries.
To learn more about Arteries , here
brainly.com/question/27244840
#SPJ4
Answer:
Saliva
Lipase
Amylase
Trysin
Pepsin
Erepsin
Explanation:
Substances? Just any substances?
Robert Koch is the scientist who created tests that helped confirm that bacteria and other microorganisms cause a variety of diseases. He is a German physician and a microbiologist who is known in identifying specific causative agents in a number of illnesses which includes cholera, tuberculosis and anthrax. Due to this contribution to medicine, he received a Nobel Prize in 1905.<span />