Sarah is at the gym working out. she does her normal workout and then, afterward, experiences some pain in her leg muscles as lactic acid has built up and caused cramping. based on this what type of activity do you think sarah did at the gym?

a). jogging 6 miles for one and a half hours

b). taking a long cycling class

c). rowing long distance for one hour.

d). running sprints in the gym

The similarities of organisms in which two areas numbered above provide the best evidence for common ancestry between organisms in both locations?

Students in biology are studying the macromolecules of life. they used a calorimeter to determine the calories in various types of food. once the lab was completed, the students ate the left over food samples. monica commented that in just 6 or 7 "chews" of the saltine, it was gone; nothing but a sticky paste in her mouth. elaborate on what happened chemically while chewing the saltine. include the macromolecules present.

Several billion years ago which gas was the least prevailant in the atmosphere