Sand can be trucked in from other sources and filtered for sediments to eventually make way into the air and water. They can also build seawalls, revetments, and jetties along the shoreline. :)
The question is asking to choose among the following term that states the Indonesian name for Borneo and base on my research and further investigation, the correct answer among them is in letter D. Kalimantan. I hope you are satisfied with my answer and feel free to ask for more if you have questions and further clarifications
Serious environmental problems. :)
