Answer: It is the key to blocking infections
Explanation: I hope this is right :)
Answer:
The <u>vas deferens</u> transports mature sperm to the urethra in preparation for ejaculation.
Answer is: a secretary smokes a cigarette in a crowded break room.
External cost Is when consuming a good or servise imposes a cost to a third party. In this case, smoking affects other people in break room, causing pollution and health related problems.
C. Protective over young cubs
