Mrs. rushing has 3 chemistry classes with 24 students in each. an experiment calls for each student to use 4 test tubes.
how many test tubes are needed in all for her classes?

Ablastocyst is a group of cells that forms after a human egg is fertilized. the blastocyst consists of two types of cells. some of these cells will become the placenta. what do the other cells develop into?

Which represents a negative impact of technology

All vaccination should(n’t) be mandatory! 1.at least 5 sentences explaining 2.why? 3.in the end summarize the sentence