The clownfish is a species of fish that lives between the stinging tentacles of sea anemones. the clownfish protects the anemone from anemone eating fish, while the anemone’s tentacles protect the clownfish from predators. the relationship between clownfish and anemone is an example of
a) commensalism.
b) competition.
c) mutualism.
d) parasitism.

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.