Orcas (or killer whales) are difficult to study because it is costly, and not only that orcas appear in remote loactions, so it is harder for scientists to find them and study them in the wild.
Answer:
the answer to the question is B
Answer:
Anne Frank died in February or March 1945, shortly before British troops liberated Bergen-Belsen on April 15, 1945. Anne Frank died at the age of 15. Margot Frank died at the age of 19, also in February or March 1945. Both Margot and Anne died of typhus
Two should be the answer ( sorry if it is not it is what I have learned but It could be wrong sorry)
Character perspective: how the character sees things