A delta
The Mississippi Delta.
The Mississippi empties into the Gulf of Mexico.
delta
Louisiana. The Mississippi River enters the Gulf of Mexico through a huge delta in southeast Louisiana, just downriver from New Orleans.
It doesn't flow into a "sea". It flows into the Gulf of Mexico, part of the Atlantic Ocean. The Gulf is much larger than so many " seas " such as the Sea of Japan, between Russia and Japan, and the Aegean Sea of Southern Europe.
New Mexico
The Wolf River enters the Mississippi River near Memphis, Tennessee.
Ohio River
Texas, New Mexico, and Arizona.
It drains into the river delta which enters the Gulf of Mexico in the south part of Louisiana. Basically all of the central US between the Appalachian mountains in the East & the Rockies in the west.
Four sperm cells are produced in males when one diploid cell enters gametogenesis.
The Canadian River cuts across the Texas Panhandle from New Mexico, enters Oklahoma, crosses through Arkansas to join the Mississippi River.