In response to falling blood glucose levels, which pancreatic islet cell releases glucagon?

Why do vivid images create more memorable memory

Measuring your progress by weight (only)? a: the fit of your clothes b: bathroom scale c: body fat scale d: body fat caliper

What a self improvement for a busy person who had difficulty finding time to exercise/ dropping out of clubs and activities/ refusing social invitations from friends/ scheduling daily invitation activity/ sleeping fewer hours at night