What two conditions must be present for osmosis to occur?

When analyzing tree rings, what do scientists assume a thin ring indicates?

Give three examples of plant activities that are affected by circadian rhythms and natural fluctuations in the length of daylight?

Gregor mendel is best known for his work with pea plants and for uncover many of the mysteries of genetics. one of his major findings stated that there were specific, physical units of inheritance that are transmitted during reproduction. what is the the name given to these units of inheritance which can be found on chromosomes? a) centromeres b) cytoplasm c) genes d) nucleotides