Algerica is performing flame tests on a set of compounds. To do this she lights a Bunsen burner, dips a wet
wooden splint into a weighing dish containing several compounds, and places the splint in the flame. She records
the color she observes.
Which is the MOST dangerous potential hazard?
Getting confused and recording data for the wrong compound.
Leaving the Bunsen burner unattended and having it fall over.
Overheating one of the compounds until it decomposes and turns brown.
D)
Leaving the wooden splint in the flame too long and having it catch fire.

americans began to notice growing differences between the northern and southern sections of the country. there were more people living in cities in the north, which made it more urban. more people lived on farms in the south, which made it more rural. while many people were farmers in the northern states, there were now other ways to make a living, such as working in mechanical cotton gins factories manufacturing cloth, tools and other goods. people in the north supported high tariffs on goods imported from europe because the extra cost encouraged people to “buy american” instead. in the southern states, planters did not like tariffs because they sold most of their production to europe and bought their tools from there as well. southerners believed the protective tariff was something that only northern factory owners keep their profits high. so the southern politicians came up with an idea. they would opt out. they would simply ignore the protective tariff. it was ‘null and void’ in south carolina. the state would not collect the taxes on goods imported into south carolina, no matter what the president said they had to do. this decision led to the nullification crisis.

hello

answer: collecting information/data

reason: the student is going around and asking people questions to collect data

i hope this

b tumor cells have a cell wall instead of a membrane

explanation:

tumor cells different from normal cells because tumor cells have a cell wall instead of a membrane.