Final answer:
Hosea 4:13 states that the people burn incense on mountains and hills, and under various trees, which symbolizes idolatrous practices.
Step-by-step explanation:
According to Hosea 4:13, the people mentioned in the verse burn incense on the tops of mountains and hills and also under oak, poplar, and terebinth trees because of the shade they provide. This passage reflects the practices of idolatry and false worship that were present among the people at the time, which was contrary to the commandments given by God to the Israelites.
The incense burning mentioned in the Bible verse symbolizes the acts of worship directed towards idols instead of the one true God.