What do the red arrows that point upward indicate?

O All of the above

O Substances that form acid rain rising from the surface

O Nitric oxide from vehicles

O Both nitric oxide and sulfur dioxide from power plants

Which experiment would most likely contain experimental bias

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.

Ineed some everybody. the production of cells during mitosis into specialized function is called: recombination or differentiation