Science Warm Up 9/28

How much of Earth's water is unavailable for humans to consume due to its high salinity? 

• 3%
• 23%
• 77%
• 97%

Which statement best describes how estuaries are positive environment for animals and plants

• They flood regularly destroying organisms' habitat

• They provide a safe hatchery full of nutrients and food

• They dry up each summer stranding organisms in shallow water

• hold high numbers of predators to feed off young organisms

How is the intertidal zone different from the open ocean environment?

• Conditions in the intertidal zone remain constant
• The intertidal zone's conditions constantly change
  
• The open ocean is the shallowest zone in the ocean
• the conditions in the open ocean change continually

The population of photosynthetic organisms is higher in the neritic zone and surface waters than in the deep ocean. Which statement best explains the reason for this?

• There is more space for plants to grow in these areas of the ocean.
• There is more dissolved oxygen for plants in these areas of the ocean.
• The availability of sunlight and nutrients supports photosynthetic organisms.
• The high salinity and cool temperature supports photosynthetic organisms.
  

In which location should fishermen go in order to catch a greater number of fish?

• at the shoreline

• intertidal zone

• in an upwelling

• deep ocean floor