Simple sentence:
The marine worked as a solider for 25 years.
Compound sentence:
The marine worked as a solider for 25 years, yet he had to retire because of age.
Complex sentence:
Because the marine worked as a solider for 25 years, he often fought in a lot of wars.
Compoud-Complex sentence:
The marine worked as a solider for 25 years, and so did his wife, and also he worked as a pilot in 1978.
( Hoped this help :) )
No, you do not capitalize marine biologist in a sentence. (Unless marine is in the beginning of the sentence)
"Are you still in the marine?"
This looks like a job for a marine surveyor.
When writing a sentence
Implications of these findings for the design of marine surveys will be explored.
The weightiest marine animal, I believe, is the blue whale.
the oil spill imperiled local marine life.
Wel if your talking about the military branches then yes. The marine was standing next to his fellow soldiers underneath the tree.?
"The Marine officer" is a phrase, not a sentence. A phrase does not necessarily have a predicate, and in thie case it does not. Suppose you were looking instead for the complete predicate of the follownig sentence: The Marine officer with shiny shoes drove the Chevrolet past the laundromat on Fifth Street. In that case, the complete predicate would start with the word "drove" and include the rest of the sentence to the end.
An inboard motor is a marine propulsion system for boats.
Marine biologists use hydrophones to record underwater sounds.
At the marine, spectators may be able to see many types of amphipods.