Which term refers to the process in which two gametes fuse to make one zygote?

Consider the model of the oxygen cycle on earth. the majority of earth's oxygen reservoirs are found in the a) atmosphere. b) biosphere. c) hydrosphere. d) lithosphere.

The chromosomal structure that limits the number of cell divisions of a cell is the the chromosomal structure that limits the number of cell divisions of a cell is the kinetochore telomere histones centromere

Which ocean is on the eastern coast of north and south america? arctic ocean indian ocean pacific ocean atlantic ocean