Coach taylor is trying to explain the negative side effects smoking has to athletic performance. which of these options include both a scientific model and a connection to coach taylor’s topic of athletic performance? a. show pictures of the lungs of a smoker as compared to a non-smoker b. write the chemical formulas for carbon monoxide (found in tobacco smoke) and oxygen, comparing the two substances c. diagram the flow of oxygen-rich blood through the body of a non-smoker. then diagram the flow of blood with less oxygen (from airway resistance) through the body of a smoker d. list some diseases linked to smoking: cardiovascular disease, lung cancer, emphysema

On a recent expedition to a remote region of northern canada, scientists uncovered skeletal remains from about 100,000 years ago. surprisingly, all the skeletal remains, which included many species from differing biological families and spanned about two thousand years, showed evidence of experiencing temperatures in excess of 1000 degrees fahrenheit (or 538 degrees celsius). which of the following, if true, best explains the apparent paradox between the cold environment and the evidence of the bones experiencing hot temperatures? (a) chemical changes that naturally occur during the process of decay in only one north canadian species produce the same evidence of the species' skeletons being exposed to hot temperatures as the expedition scientists found. (b) a little over 103,000 years ago, a large fire is known to have occurred in northern canada. (c) strong evidence exists that as early as 70,000 years ago, homo sapiens around the world relied heavily on fire to cook animals. (d) in the same expedition and in roughly the same layer of excavation, scientists found rudimentary wood cutting and hunting tools used by early humans.

What does polymerase chain reaction (pcr) do? o a. separates dna fragments by size o b. cuts a dna sample into fragments o c. provides an overall picture of a person's chromosomes o d. makes more copies of a sample of dna

In the ocean why are the greatest amount of primary producers found in the epipelagic zone and how does that affect biodiversity