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

Explanation

Benefits of Arthropoda.
(i)Man eats prawns, lobsters, crabs which are highly proteinaceous and have minerals. It is really a nutritious food. The business of rearing these is profitable.
(ii)Honey bees produce honey and bee wax which have many advantages.
(iii)Silk worms, lac insects supply useful products like silk and lac respectively.
(iv)Many insects bring about pollination which helps in agricultural practices.
Disadvantages of Arthropoda.
(i)Animals like scorpion, honey bee can bite humans which harms the body.
(ii)Insects like mosquito spread malaria, dengue. Bed bugs, lice are ectoparasites and cause various disorders in human body.