Directions: Read each question carefully and encircle the letter of the correct answer.
11.Organisms that live in the intertidal zone are adapted to crashing waves and tidal changes. How do barnacles prevent being washed away?
A. They cling tightly to rocks
B. Barnacles go with the waves
C. They open their shells
D. They store much salt in their bodies 12. How do organisms exposed to air be able to prevent Drying out?
A. They seal completely their shells
B. They move up to zones that have plenty of water
C. Organism feed on other organisms that are watery
D. Organism store much water in their bodies
13. Why do you think there are organisms that can be found in more than one zone?
A. They are able to reproduce more of their kind
B. They are more adapted to the conditions in the zone
C. They cannot adjust to harsh environment
D. They require little amount of water 14. What factors may affect the salinity of water across the Intertidal zone?
A. Amount of rainfall and evaporation
B. Kinds of organisms living in the area C. Availability of space and food
D. Runoff from the people living along the shoreline
15.In many desert regions, water is diverted from streams and rivers to people in cities. How does this affect the animals in the area?
A. The animals become more active in daylight hours
B. The animals migrate to tropical rainforests
C. The animals move closer to others to get food
D. The animals stop searching for food and water​