The inner planets—mercury, venus, earth, and mars—are believed to have been formed by masses of cold hydrogen and helium collisions with large galaxies the combining of asteroid-sized debris the explosion of supernovas

Despite the differences in mature plant cells, all of them are derived from meristem cells. the three major types of tissue systems develop from the meristem. meristems develop cells in all but which tissue?

Adrought killed all the plants in an agricultural farmland. gradually, due to wind and some birds for. nearby areas, new plants started sprouting l. what stage of succession was taking place in the farmland? a) competition b) nudation c) ecesis d) reaction e) migration

The same agricultural practices are used in every country of the world. select the best answer from the choices provided t f