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Across 2. Concrete structures like bulkheads “harden the shoreline”. This means that land near the coast that once made up estuaries is changed to hard surface and can no longer absorb storm surge & provide shelter or food for the animals and plants that exist in coastal regions. 3. Some are introduced by humans though ballast water exchange or through dumping of aquaria containing non-native fish. They compete for food and shelter, prey on native species or push native species out of their natural habitat. 6. When water runs downstream from cities, farms and factories, it can carry many things harmful to estuaries such as excess nutrients, raw sewage and manure and chemical waste. 7. Changing river water flow can restrict sediment deposits & nutrient availability downstream, fish migration, & can increase saltwater intrusion into underground water tables. 8. _______ & draining of wetlands, & ________ deep navigation channels through estuaries & wetlands ultimately destroys & damages habitat. These also change water & sediment flow.

Down 1. Can result in changes in the amount and timing of freshwater inputs to estuarine ecosystems, changes in temperature of the air & water, increases in sea level, more frequent & intense tropical storms, & changes in coastal currents. All of these changes can cause stress to estuarine organisms, can change where estuarine species are found, can alter estuarine processes & the physical & chemical patterns and make-up of estuaries. 4. Means relating to or resulting from the influence of humans on the natural world 5. Reduces the number of commercially valuable estuarine organisms, not only impacting the diversity of the ecosystem, but also impacting local economies.