Freediving is an activity in which a person dives, sometimes to great depth, without the use of scuba gear. the diver must hod his or her breath for the duration of the dive. (the record depth with no equipment such as diving fins, is 101m; the offical record time is over 11 minutes). historically freediving has been used by pearl divers and sponge divers. some freedivers hyperventilate (breathe rapidly and deeply) before diving. hyperventilation can change the concentration of co2 in the blood and may increase the length of time that a person feels like he/she can hold his/her breath. how does hyperventilation affect blood ph? a. it increases co2 and decreases h+ in the blood, increasing phb. it decreases co2 and increases h+ in the blood, increasing phc. it increases co2 and h+ in the blood, decreasig phd. it decreases co2 and h+ in the blood, increasing ph

It decreases CO2 and H+ in the blood, increasing pH

Explanation:

Carbon dioxide is removed from the body in exhaled air in the form of gas, while hyperventilation is going on, the volume of air inhaled and exhaled is greater than the normal, this will cause more Carbon dioxide

to be excreted out of the body altering the equilibrium between the bicarbonate ion and carbon dioxide:

Equation of the reaction:

CO2 + H2O ← H2CO3 ← H+ + HCO3

This favours the equilibrium change to the left, leading to an increase in a pH due to loss of H+.

I hope you find this information helpful! Good luck!

"1. it should be, it has been for about 20 years, and it's really not much different in the end than breeding animals to have particular traits. there are always concerns about genetically engineered animals/plants affecting the environment in unexpected negative ways, but i can't think of an example where the fears didn't turn out to be baseless.  

first, as you point out, it would be a great advance in pharmacology, to be able to tailor drugs and their doses to me. the pros involve better medical treatment. the cons involve privacy issues like insurance companies denying coverage to people with genetic risk factors. looking at dna markers wouldn't affect the frequency of genetic diseases, but it would allow detection of them earlier. and ok, actually i suppose that if people used this information to avoid having children with genetic diseases, some might decrease in frequency."