Pllz the shaded area of this graph could be used to

the portion of earth’s land covered with ice at the peak of the cenozoic ice ages

the portion of earth’s land that was a part of pangaea

the portion of earth’s history during which humans have existed(wrong)

the portion of earth’s history during which tectonic forces acted on earth’s surface

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.

How can you approximate the number of calories required to keep you in energy balance?

What would most likely happen to a unicellular organism if it was exposed to a hypotonic solution for an extended period of time?