Why are marine oceanographers particularly concerned with coastal regions? o a. coastal regions are highly impacted by human activity. o b. previous studies in marine science have largely ignored them. o c. they are the only areas that marine oceanographers can access. o d. by definition, marine oceanographers are only concerned with the coast.

A. Coastal regions are highly impacted by human activity

Explanation:

Since I'm not completely sure I will debunk the others and let you decide.

-Option D- says they are ONLY concerned with the coast. KEY WORD only. Oceanographers study the ocean and not just the coast.

-Option C- also not true, the coast is probably the easiest portion to access but growing technologies and inventions like submarines made the ocean easier to study.

-Option B- I'm not sure of this one. I would think previous studies would start with the coast because it's the easiest to access

-Option A-  Man-made beaches, water pollution, shoreline erosion. changing an organisms environment disrupts the ecosystem and human activities cause a significant decline in coastal habitats. i think this is the answer

the tricuspid valve is present between right atrium and right ventricle

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.