Dolphins pdf epub mobi txt 电子书下载 2024

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Walker, Sally M.

Lerner Pub Group

2007-11

$ 31.56

LIB

9780822567677

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发表于2024-11-11

Dolphins epub 下载 mobi 下载 pdf 下载 txt 电子书下载 2024

Dolphins pdf epub mobi txt 电子书下载 2024

图书描述

Like a slick, gray torpedo, a dolphin breaks the water's surface and leaps into a graceful arc. Its shiny skin glistens in the sunlight, just before it dives deeply again. Marine and river dolphins are highly social mammals that live in groups called schools in oceans and rivers. While many people are fascinated with dolphins, humans also have caused them harm. Fishing practices once decreased the number of marine dolphins. River dolphins are greatly affected by the pollution created by humans. Yet many people are working to protect dolphins and their natural habitats. Learn more in this edition of Nature Watch.

Dolphins 下载 mobi epub pdf txt 电子书