Space is best associated with which of the following? a. biosphere b. exosphere c. geosphere d. cryosphere e. atmosphere f. hydrosphere only one answer.

Option (B)

Explanation:

Exosphere is the region of the upper atmosphere of earth and here the amount of air molecules is significantly less, forming a thin layer with certain amount of hydrogen and helium. This layer extends upto a height of about 10000 km and here the particles moves very rapidly, thereby the temperature at this region is relatively high. From the exosphere region the space starts and it is the region in which the artificial satellites are orbiting around the earth.

Thus the correct answer is option (B).

prophase: we can observe the chromosomes to coil up and condense. they become visible. nuclear membrane and envelope disintigrate.s

metaphase: chromosomes align at the center, the metaphase plate. spindle fibers attach to centromeres of the sister chromatids. they meet at kinetochores.

anaphase: sister chromatids are pulled towards each opposing centromere, set on different poles.

telophase: chromosomes are now clustered up only on either sides of the cell. nuclear membranes reform, and a new cell wall forms along the cell plate. this will lead to cytokinesis, the process that divides the cell membrane and forms the cell wall.

d

explanation: