Who was one of the first people to identify and see cork cells?
a. anton van leeuwenhoek
c. matthias schleiden
b. robert hooke
d. rudolf virchow

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

Where is most of the fresh water on earth found a in the ocean b in glaciers and in ice caps c in rivers d in the soil

The earths core is made up mainly of what 2 substances? 2. like an egg, earth has a core, a layer surrounding the core, and a thin, hard outer layer. which layers of the earth match the layers of an egg?