Which of the following is true concerning hull fouling from commercial shipping and recreational boating?
a.
it constitutes less than half of all nonnative species introductions.
b.
the revenue brought in from these industries is relatively small.
c.
it is difficult to prevent since ship hulls begin, conduct, and end voyages in water.
d.
it is best combated by chemical treatments.

Answer;

It is difficult to prevent since ship hulls begin, conduct, and end voyages in water.

Explanation;

-Hull fouling refers to the way organisms can attach themselves to the hull of a ship during a voyage and transport themselves long distances this way.

-Aquatic plants for example, are easily transported when plant fragments get tangled on boat propellers and fishing gear of recreational boats.

-Concerning hull fouling from commercial shipping and recreational boating, it is difficult to prevent since ship hulls begin, conduct, and end voyages in water.

The correct answer is option C

Hull fouling can be defined as the unintentional transfer of species that gets attached to the the ships during a voyage and gets transferred to long distances.

Aquatic animals for example are easily transported when plant fragments gets tangled on the boat propellers and fishing gear of recreational boats.

measuring physical properties lab reportinstructions: in the physical properties lab, you will test the physical properties of different building materials in order to pick the appropriate materials for a new home in tiny world. record your observations and test measurements in the lab report below. youwill submit your completed report.name and title: lyric lawton, mr.herbert, 10/13/17, physical properties lab. objective(s): i need to parvus build his house out of the right material, so he will stay cool in the mountains.hypothesis: if we use wood to build the roof of the house, then the temperature inside the house will remain cooler.if we use clay brick to build the walls and floors of the house, then the temperature inside the house will remain cooler.if we use aluminium to bring electricity into the home, then it will allow electricity to flow into the home at a faster rate.if we use iron to construct the latches on the windows and doors, then the magnetism will keep the latches secure.