The answer is: They filter microscopic organisms from the waters.
Explanation:
Barnacles are filter feeders, which is why they are usually on dock poles and non-moving structures underwater. They do not need to travel to get food, because it comes to them!
The answer is : 32S has 16 neutrons, whereas 35S has 19 neutrons. If the isotope 32S has 16 protons and 16 neutrons, the isotope 35S will have 16 protons and 19 neutrons.
