a monarch caterpillar (danaus plexippus) walking along a single blade of long green grass

metamorphosis invertebrate caterpillar electricity background horizontal collection technology futuristic innovation plexippus butterfly ecosystem renewable variation wildlife climbing malaysia crawling creature electron sunlight monarch walking closeup striped marking migrate rooftop zoology ecology economy sunbeam danaus single insect people colors energy social issues global growth blade green grass color solar panel white fauna toxic large long blue life pest wild grow sky bug sun