The sentence you wrote is mostly correct and easy to understand. Here's the original sentence:
"Mangrove trees drink salty water through their roots. They put the extra salt into their leaves and drop them to get rid of it."
To make the sentence a bit clearer and grammatically smoother, you could say:
"Mangrove trees take in salty water through their roots. They store the extra salt in their leaves and drop the leaves to get rid of it."
Explanation:
- Instead of "drink," we use "take in" because trees absorb water rather than drink like animals.
- "Put the extra salt into their leaves" can be improved to "store the extra salt in their leaves" to sound clearer.
- Adding "the leaves" before "to get rid of it" helps specify what is being dropped.
So the corrected version helps the sentence sound natural and clear while explaining the process in a way an 8-year-old can understand.