I believe the correct response is D. A single variable.
The prostate gland ,the bulbo-urethral gland and the seminal vesciles are the glands which provide secretions that nourish and protect sperm cells.
Answer:
I believe they would be h_i_n_g_e.
Explanation:
The Fingers can only move so much unlike the thumb.
I guess I correct. Can anyone just tell me if I am correct?
This is a physics question, not biology, but...
f=1/T where f is frequency and T is the period.
f= 1/(1/3)=3
frequency =3 Hz