Answer:
C
Explanation:
You could literally search that up. It's correct though.
"Sperm develop in the testicles within a system of tiny tubes called the seminiferous tubules. At birth, these tubules contain simple round cells. During puberty, testosterone and other hormones cause these cells to transform into sperm cells."
Answer: c (HIV)
Explanation: Skin cancer, heart disease, and diabetes cannot be passed down unless it's hereditary though HIV being a sexually transmitted disease should be reported for that reason.
They both help to keep all of the gas and dust in place and not just float off. it evolved from a solar nebula. stars were created in the solar nebula and they would attract gas and dust and became bigger and bigger.
