One difference between parasitism and predation is that parasites select one: a. do very little harm to their hosts. b. keep their hosts alive for a period of time. c. attack the host only from the inside. d. are not very big.

25) a student takes four samples of a white crystalline solid and places each in a well plate. on top of each sample, she carefully places 20 drops of clear mystery liquids a, b, c and d. her results for each well are: liquid a: the solid dissolves quickly. liquid b: the solid appears unchanged. liquid c: a brownish colored liquid is produced. liquid d: fizzing occurs and the well becomes warmer. in which well does a physical change occur?

Here's one way to follow the scientific method. place the missing steps in the correct position in the process.

Compare the depth of field when focusing with low power and high power. which power has the greater depth of field?