Answer:
Who keeps the ocean clean?
I am a seed with three letters in my name. Take away the last two and I still sound the same. What am I?
What is brown and sticky?
I have feet on my head
I go in hard, come out soft. Blow me hard and I'll make a pop. What am I?
Though not a plant, has leaves. Though not a beast, has spine. Though many wouldn't need this thing, It's more valuable than wine.