Which structure fuses to form a diploid zygote during sexual repoduction

Which zone within the open-ocean zone is home to the most organisms? deep zone surface zone intertidal zone transition zone

The serengeti plains are part of the african savanna ecosystem and are home to a variety of different species of plants and animals. the serengeti plains experience a seven-month period of seasonal drought each year, during which the ecosystem receives only four inches of rain and the availability of some resources becomes very scarce. which type of limiting factors does the seasonal drought in the serengeti plains affect?

Which feature would you expect to find in a population in which sexual selection depends on male competition?