Please answer these multiple choice questions! Thank you!Q1. Abyssal plains are very flat because ________.A. basalt volcanos on the seafloor produce little terrainB. they are not really flat; it is just that there is no data so they are shown as flatC. sediments accumulate to cover the seafloor topographyD. they have flat faults, the form flat, planar topographyQ2. The dissolved materials in seawater are thought to originate from chemical weathering of rocks on the continents and also from ________.A. evaporation of fresh waterB. erosionC. outgassing of elements from Earth's interiorD. organismsQ3. Salinity in the ocean is lowest in regions where ________ is high and ________ is low.A. precipitation, evaporationB. temperature; evaporationC. precipitation; temperatureD. temperature, air pressureQ4. Seawater has become more acidic since the industrial revolution and this is commonly attributed to ________.A. the loss of calcite-secreting organisms and reef-builders in the oceans due to pollution.B. human dumping of large quantities of waste materials into the oceans that increase the acid content of the waterC. the increase in CO2 being put into the atmosphere and then absorbed into the oceans.D. a decrease in the amount of base compounds to neutralize the natural acids in seawater
