Which of the following statement below was dr. willem johan kolff’s first step in using the scientific process to invent the hemodialysis machine? a. he built the machine and tried it with various patients, collecting data about its effectiveness. b. when a patient’s kidneys failed, he wondered if it would be possible to perform kidney functions with an external machine. c. he researched and collected data about numerous patients who exhibited symptoms of kidney failure. d. he drew conclusions from studies of various symptoms of kidney failure, and drew a design for the ideal external blood-processing machine.

Which of the following is true about marijuana? a) commonly known as the date ra.pe drug b) also called smack c) a common drug used for "relaxation d) also known as laughing gas

Charlie is easily winded during soccer practice and wants to improve his cardiorespiratory fitness. which activity would be best for him to choose? lifting weights walking from one class to another running in a 5k race riding a bike at a leisurely pace

You are traveling down the road and the hopd flies up- a. look out of the gap between hood and cowling b. look out the left window c. stop the car d. turn on your four-way flashers e. use stop signal given with arm 2. you are driving down a dark, country road and the headlights suddenly go out- pull off the side of the road and stop flash your break lights activate your four way flasher have scotty beam you up turn your parking lights on 3. you turn on a crowded street and the accelerator pedal sticks- turn ignition off shift to neutral apply the brakes reach down and pull pedal by hand use the of toe of your food to pull pedal up