Earth Science

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Why are many fishing boats found near ocean upwellings?

Which best determines the health of a lake used as a source of freshwater?

Sammy collects some river water by dipping the jar into the water but not scooping the riverbed. What part of the river’s load will MOST likely settle to the bottom of his jar?

Which two statements in the table are true about the changing salt concentrations of ocean water? 1 When Earth’s ice increases, ocean water gets saltier. 2 When Earth’s ice increases, ocean water gets less salty. 3 When ocean water evaporates, the w

Scientists have found strange new life-forms called “tubeworms” on the deep ocean bottom. Which most likely provides energy for the tubeworms?

Which chemical elements in fertilizers pollute stormwater runoff and contribute to excessive plant growth in a water system?

Which most likely causes the western coast of the United States to be so plentiful and diverse in sea life?

Which will best show lakes, rivers, and streams are healthy?