From what parts of the ring does the fruit develop? Seed from cotyledon, pericarp from knit.
Seed from pistachio, pericarp from knit.
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Seed from cotyledon, perianth from perlanth
Seed from knit, perennial from periwinkle.​

Which best describes red blood cells? a. they are colorless b. they protect against disease-carrying microorganisms c. they transport oxygen throughout the body d. they aid in blood clotting

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.

What is thought to have caused the mass extinction at the end of the cretaceous period?