What did humans begin studying to predict seasons and migrations of animals?

Which product would have been most likely to have been traded in this area at this time?

How did kahlo’s worsening health affect her art? a she was unable to paint as much as she used to because of her health. b she used darker colors in her paintings because her mood was affected. c she used to paint to her feel better and she painted with greater passion. d she painted herself less often because she wasn’t confident in her appearance.

Following archduke franz ferdinand's assassination, austro-hungarian leaders: a. aided the ottoman empire in its campaign to keep serbia under its control. b. executed nearly all prominent serbs living in austria-hungary c. threatened to invade serbia if serb leaders did not agree to a set of strict demands. d.. formed an alliance with great britain to protect austria-hungary from future attacks.