Astheymigrate(迁移),butterfliesandmothschoosethewindstheywanttoflywith,andtheychangetheirbodypositionsiftheystartfloatinginthewrongdirection.Thisnewfindingsuggeststhatinsectsmayemploysomeofthesamemethodsthatbirdsusefortravelinglongdistances.Scientistshavelongthoughtthatinsectsweresimplyatthemercyofthewind. |
A.Insectsmigratewiththeseasons. |
B.Windhelpsinsectsgreatlyinmigrating. |
C.Windsurfinginsectshaverealdirection. |
D.Scientistshavetroubleinobservinginsects. |