Starch turns blue black in the presence of a starch indicator. dialysis tubing tied at both ends and containing starch solution is placed in a beaker of water. yellowish brown starch indicator is then added to the water. what will the solutions in the beaker and the tubing look like after 20 minutes?

Mr. mann's science students were experimenting with speed. they set up a 1 meter (100 cm) track. the students used balls instead of cars. the balls were different sizes and made of different materials. four at a time, students rolled balls around the track to see which had the fastest and slowest speeds. some of their data are shown in the table. which ball will take the longest to complete one lap around the track?

Which at first gave the south an edge in the civil war? a. a better-equipped army b. the invention of ironclad ships c. the drafting of slaves into the army

Give an example to prove that your society is developed more than it was before 10 years ?