O'Hare explains to Ted that because trees produce oxygen free of charge, he considers them a threat to his business; but Ted sneaks out of O'Hare's sight (with his grandmother's encouragement) and learns more of the trees' history.
He considers them a threat to his business. This is what O'Hare explains to Ted. Trees produce oxygen free of charge. Ted sneaks out of O'Hare's sight (with his grandmother's encouragement). Ted learns more of the trees' history.