The basic building block of life is the cell the atom the organelle dna

What environmental cues and landmarks do the geese use to determine the timing and direction of their migration over the mountains? how do they find their way?

If a cell is placed into a hypertonic environment,what will happen to it ? a)it will shrink or shrivel b)nothing c)it will burst d) it will expand or enlarge

Fill in the blank with the correct sphere label. a: ⇒ geosphere b: ⇒ biosphere c: ⇒ hydrosphere