Examlex
Which of the following displays these two characteristics: nonrivalry and excludability?
Ejaculation
The process of expelling semen from the penis during sexual climax, facilitated by muscle contractions.
Acrosome
A cap-like structure over the anterior portion of a sperm's head, containing enzymes that help the sperm penetrate the egg.
Fertilization Process
The union of male and female gametes to form a zygote, initiating the development of a new organism.
Enzymes
Proteins that catalyze, or speed up, chemical reactions within living organisms without being consumed in the process.
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