Spermatogenesis produces<span> four </span>gametes<span>, while </span>oogenesis produces one with two to three polar bodies left over. because oocytes contain not only genetic material but also mitochondria.
Answer:
D. number of individuals in a species
The hydrosphere is all water on earth, the lithosphere is the crust and upper mantle, the biosphere is all life on earth, and the atmosphere is all the gases surrounding the earth.