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What types of benefit and harm occur to human from animals of phylum-Arthopods?

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a. Benefits to human from Arthopods:
1. Pollinate crops (Bees , wasps ,butterflies ,moths ,beetles)
2. Act as predators of pests (Dragonflies , millipedes , scorpions )
3. Silk production -sericulture (silk worm )
4. Honey production -Apiculture (Honey bees)
5. Used as food (Crabs , lobsters , shrimp , prawns , etc)
Harms that occur to humans from arthopods
1. Sting or bite people (Scorpions , spiders , bed ,bugd ,ants ,etc )
2. Cause damage to wooden structures (Termites)
3. Transmit diseases (Cockroach , flies)
4. Eat food crops (Grasshoppers )
5. Live as parasites (Lice , ticks)
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