Jill has a mixture of sand and iron filings. The mass of the mixture is 250 g. Jill uses a magnet to separate the two substances. Then, she measures the mass of the sand as 150 g. What should be the mass of the iron filings?
A.
250 g
B.
It is impossible to determine.
C.
150 g
D.
100 g

Ateam from new york presbyterian hospital is conducting a study about a recent increase in cases involving both excess sweating and kidney stones. what would the team need before it draws a conclusion about the cases? medications that are specifically designed to treat the sickness machines that are built to process blood and reduce symptoms until patients are healthy again data that profile the various patients who report these symptoms proof that the excess sweating is related to the excessive kidney stones

Food contains a sugar called ( ), which is broken down in a process called cellular ( ). this process uses ( ) to break down food molecules and provide energy for cells. fill in the parentheses

The first amino acid of a new polypeptide chain is