Why are monarch butterflies disappearing? Scientists are racing to find answers. These iconic orange, black, and white butterflies flutter across much of the North American continent, and are a familiar summer sight in many backyards. But in the last twenty years, the monarch butterfly population has been decreasing. Why? Skilled science writer Rebecca E. Hirsch takes readers on a quest to discover what scientists already know-and what they’re hoping to learn. In addition, she offers tips about what monarch lovers can do to make a difference, from planting a butterfly garden to getting the word out about harmful pesticides to taking part in citizen science projects.
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भाषा अंग्रेज़ी ● स्वरूप PDF ● ISBN 9781512498660 ● प्रकाशक Lerner Publishing Group ● प्रकाशित 2018 ● डाउनलोड करने योग्य 3 बार ● मुद्रा EUR ● आईडी 8775374 ● कॉपी सुरक्षा Adobe DRM
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