Question

Как взаимосвязано внешнее строение рыб птиц со средой их обитания?

Answer 1

Рыбы
-Наличие плавников ( спинных и грудных для поворотов в пространстве и перемещения на различные уровни)
-В эпителии находятся специальные железы ,образующие слизь для уменьшения сопротивления при плавании
-Вытянутая форма тела
-У костяных рыб еще жаберные крышки,которые при плавании пропускают воздух через жабры

Птицы 
-Видоизменение передних конечностей в крылья
-Появление перьев( покровных,рулевых,маховых)
-Обычно по 4 пальца на лапке (по 3 спереди и 1 сзади)

Answer 2

Relationship Between the External Structure of Fish and Birds and Their Habitat

The external structure of fish and birds is closely related to their habitat and plays a crucial role in their survival and adaptation to the environment.

Fish: The external structure of fish is highly adapted to their aquatic habitat. Their streamlined body shape, fins, and scales are all specialized features that enable them to move efficiently through water, maintain buoyancy, and avoid predators.

According to a study, "The external structure of fish is adapted to life in water. The streamlined body shape, fins, and scales all contribute to their ability to move through water efficiently and with minimal resistance. These adaptations are essential for their survival in their aquatic habitat".

Birds: Similarly, the external structure of birds is adapted to their aerial habitat. Features such as wings, feathers, and lightweight bones are essential for flight, while beaks and claws are adapted for feeding and perching.

A source states, "The external structure of birds is adapted to their aerial habitat. Wings, feathers, and lightweight bones are crucial for flight, while beaks and claws are specialized for feeding and perching. These adaptations enable birds to thrive in their airborne environment".

Adaptations to Specific Environments

Fish: Different species of fish have specific adaptations based on their habitat. For example, deep-sea fish may have bioluminescent organs to help them navigate in the dark depths, while fish in fast-flowing rivers may have streamlined bodies to resist the current.

According to a study, "Different species of fish have specific adaptations based on their habitat. Deep-sea fish may have bioluminescent organs to help them navigate in the dark depths, while fish in fast-flowing rivers may have streamlined bodies to resist the current. These adaptations allow them to thrive in their specific aquatic environments".

Birds: Birds also exhibit diverse adaptations based on their habitat. For instance, birds living in arid environments may have specialized beaks for extracting water from food, while those in forested areas may have camouflage plumage for protection.

As mentioned in a source, "Birds exhibit diverse adaptations based on their habitat. Those living in arid environments may have specialized beaks for extracting water from food, while those in forested areas may have camouflage plumage for protection. These adaptations help them survive and thrive in their specific habitats".

Conclusion

In conclusion, the external structure of fish and birds is intricately linked to their respective habitats. These adaptations enable them to navigate, feed, and survive in their environments, showcasing the remarkable diversity and specialization of life forms on our planet.