7. Which of the following can harm the Estuaries?
A. Urban development
C. Agricultural Activities
B. Littering
D. All of the above
8. Many migratory birds come and feed on mud flats, when is the best time
for the bird to catch fish and invertebrates?
A. During tidal ebb
C.During tidal flow
B. During the storm
D. During the flood
9. How can we protect our Ecosystem in Estuaries?
A. Practice improper disposal of wastes.
B. Throw factory wastes in rivers and seas
c. Observe the Pollution preventive measures in the area
D. Practice illegal ways in Fishing
10. What is the process by which pollen is transferred in plant?
A. gerrgination
C. pollination
B. ovulation
D. respiration
pa answers pls​