Examlex
Expenses that are not classified as either variable or fixed should be omitted.
Spermatozoa
The male reproductive cells or sperm cells that are responsible for fertilizing an ovum.
Reproductive Systems
The organ systems in organisms that work together for the purpose of reproduction.
Excretory Duct
A tube-like structure through which waste products are expelled from a gland or organ.
Testis
A male reproductive organ responsible for producing sperm and hormones, such as testosterone.
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