Based on this lecture, what can we infer about the future of marine mammals？
A:Dolphins and
选项：
Based on this lecture, what can we infer about the future of marine mammals？
A:Dolphins and whales will adapt to environmental changes.
B:Marine traffic and underwater testing may cause their extinction.
C:People will be able to communicate directly with this species.
D:Marine animals will be used for military and commercial purposes.
F:此题为多项选择题。