Which of the following behaviors belongs to sexual selection?
A: Males fight against each other for the female.
B: Male displays its colorful plumage to the female.
C: The tribute behavior of insects and birds.
D: Cheetah increases running speed.
A: Males fight against each other for the female.
B: Male displays its colorful plumage to the female.
C: The tribute behavior of insects and birds.
D: Cheetah increases running speed.
举一反三
- 'surplus male and female' means single or unmarried male and female.
- · You will hear the conversation twice. The two groups they will compare and contrast will be A: male and female. B: female friends. C: different age groups.
- What was exhibited at the museum A: The sculpture of a modern female. B: The remains of a female ancestor. C: The remains of a modern female. D: The sculpture of a tourism minister.
- The male of all beasts and birds is ________ and the female __________.
- Which of the following is not mentioned in the three advertisements（） A: Marriage. B: Male or female. C: Education. D: Working experienc