Topic content:
Crucian carp breathes with ______; Dolphins breathe with ______; Frogs breathe with ______, and use ______ to assist in breathing; Dolphins in the Ocean Park are performing head kick. This behavior belongs to ______ behavior
Best answer:
Different animals have different breathing characteristics. For example, crucian carp belongs to fish, which uses gills to breathe and fins to swim; Dolphins belong to mammals and breathe with lungs; Frogs belong to amphibians, they breathe with lungs and use skin to assist in breathing; Dolphins do head performance, learned the day after tomorrow, belongs to learning behavior
So the answer is: gills; Lung; Lung; Skin; study
Answer analysis:
There is no explanation for this question
Test core:
Basis for animal classification: In addition to the external morphological structure, the classification of animals should also compare the internal structure and physiological function of animals, and combine the living habits and geographical distribution of animals. Animal classification: