What causes weathering A. natural processes only B. chemical processes only C. Weather related processes only D. physical and chemical processes

How can you keep track of variables in a science experiment?

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

The buildup of sediments where a river empties into a slow-moving or nonmoving body of water is known as a/an