Question

(iv) Why is it difficult to estimate the population of the dolphins?
(a) We don't have appropriate technology.
(b) They are large in number.
(c) They are dangerous to go near.
(d) There are many species spanning a wide geographic area.​

Answer 1

Answer:

iv) Determining the size of a group of cetaceans is particularly challenging because of several characteristics that make group size estimation difficult: (1) the animals are moving; (2) an unknown fraction of the group is underwater at any moment; (3) the fraction underwater changes with behavior; (4) groups can be large; ...