Elements are arranged in the periodic table based on various patterns. for example, elements found in the rows near the top
a. have lower atomic numbers than the elements in the rows near the bottom.
b. have the same atomic numbers as the elements in the rows near the bottom
c. all have the same atomic number.
d. have higher atomic numbers than the elements in the rows near the bottom

A. have lower atomic numbers than the elements in the rows near the bottom.

Explanation:()

both male and female gametes are produced by meiosis of the germ cells. therefore, both male and female gametes are haploid. one male and one female gamete unite during the fertilization to form the diploid zygote. in seed bearing plants, pollen grain is the male gametophyte, which produces sperm cells.

imagine a line passing through the center of earth that goes through both the north pole and the south pole. this imaginary line is called an axis. earth spins around its axis, just as a top spins around its spindle. this spinning movement is called earth's rotation. at the same time that the earth spins on its axis, it also orbits, or revolves around the sun. this movement is called revolution.