A 100-meter sprint is a race using only the straight side of a racetrack. A 400-meter sprint is a race that makes one
complete lap around a racetraſk. Why are velocity and
speed the same for a 100-m sprint but not a 400-m sprint? What's Pieology again mom

Four types of motile cells in human body?

Ihave no idea how to solve these. plus there's another question that is 2) a 10 kilogram meteorite is collected in space and brought back to earth. it is composed of 1.25 kg of uranium-238 and 8.75 kg of lead-206. how many u-238 half lives have passed? what is the approximate age of the meteorite?

The ultimate purpose of respiration: a. inhale 02 and exhale co2 b. place oxygen in the lungs c. place oxygen in the blood d. deliver oxygen to every blood cell