PLEASE ANSWER ASAP When a runner completes a 10K
race, she is breathing heavily,
sweating profusely, and her
heart rate is rapid. What
systems are involved in causing
these changes in her body
systems? How do these
systems interact to allow her to
complete the race?

Sea stars, sea urchins, sand dollars, and brittle stars are all memeber of a group, what is the common name of the group they are all in

What are the four stages of cell signaling?

Use the drop-down menus to match each part of the scenario to the correct scientific practice. akira records the speed of a reaction without a catalyst and then with a catalyst. akira creates a reaction without a catalyst and repeats the reaction with a catalyst. akira turns in a written lab report to his science teacher. akira wonders, "will adding a catalyst speed up this chemical reaction? " akira writes in his notes that adding a catalyst sped up the chemical reaction because the catalyst lowers the activation energy needed to get the reaction started.