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!

kelp are large brown algae that live in cool, relatively shallow waters close to the shore. they grow in dense groupings much like a forest on land. these underwater towers of kelp provide food and shelter for thousands of fish, invertebrates, and marine mammal species.

e) all of the above

cells use diffusion to get substances in and out of themselves. that diffusion will occur across the cell membrane or the outer covering of the cell. because we are talking about the surface of the cell, surface area and volume are  important factors here. as a cell increases in size, its surface area and volume increase as well.  we call that the surface area to volume ratio (sa: vol).  but the catch is that  volume increases at a greater rate than surface  area. in other words, as a cell gets bigger, the sa: vol gets smaller. so a really small cell like bacteria is mostly cell membrane (surface) with very little contents (volume). a really big cell like an egg, is mostly insides with a super thin membrane. so what ends up happening is that the cell cannot efficiently diffuse all of the stuff it needs in/out to survive. therefore cell size is limited to about 100mm. so how do we make organisms bigger than 100mm? cells divide! by dividing and becoming multicellular, organisms are able to grow!   check out the diagrams i attached to see the effect of sa: vol. i hope this ! good luck!