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ineedtopeebeforethec
31.10.2019 •
Biology
Responses of the immune system to usually
harmless environmental substances are known as
(1) antigen production
(2) chromosomal mutations
(3) pathogens
(4) allergies
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Ответ:
Ответ:
This skydiver is using a wingsuit to soar through the air. ... Resembling something between a flying squirrel and a snow angel, the wingsuit allows skydivers and BASE jumpers to leap out into the void, spread their arms and soar through the air. In a sense, wingsuit flying is a cross between skydiving and hang gliding.