Answer:
My first keeps time, my second spends time, my whole tells time.
What does a WW1 Trench, A Submarine and a Popular Phone App all have in common?
Sometimes black, sometimes white, I have veins but no blood
Each morning I appear to lie at your feet, all day I follow no matter how fast you run. Yet I nearly perish in the midday sun.
What holds names and memories which are not its own?
I can only be played on a windy day
Difficult
Animal
Easy
Food
Funny
Kids
Logic
What am I?