7. Based on Student I's explanation, the same substance composes both of the samples in which of the following
pairs?
A. Samples A and B
B. Samples B and C
C. Samples C and D
D. Samples D and E

*drag each tile to the correct location in the sequence* the table shows chronological events in the life of our sun, a medium-sized star. place the missing events into the correct rows of the table.

In a stagnant pool of water, a crayfish may spend much of its time lying with one side of its carapace near the surface of the water. in this position, it will move the walking legs on that side in a rhythmic back-and-forth motion. explain the likely function of this behavior.

Which of the following are guidelines to follow for obtaining accurate observations