Black sand can be found when tides are particularly high sediment contains volcanic ash local residents prefer it to light sand all the sand is washed away from the beach

they both go up but then go back down. they both end lower than they started. lastly, they both are competitive/the second on.

explanation:

the dna molecules have a negative charge because of the phosphate groups in their sugar-phosphate backbone, so they start moving through the matrix of the gel towards the positive pole. power is turned on and dna fragments migrate through gel (towards the positive electrode).

explanation:

yes

no

blue is scattered more than other colors because it travels as shorter, smaller waves. this is why we see a blue sky most of the time.