40mm diameter hoop with 10mm black ear stud

Weight: 610g

through exquisite photographs from professional and amateur photographers

Nomenclature has been updated and distribution maps revised with a novel visual index

Spinosaurus likely fed on fish and other aquatic animals

Magnetic Intruder Alarm - Kidz Labs White-stemmed Gum Moth 40mm diameter hoop with 10mmDon't let anyone sneak into your room undetected. Build your own Intruder Alarm to keep out those pesky brothers & sisters, and while you are at it, explore how a magnet sets off this cool build your own intruder alarm. A great project for exploring how a magnetic switch works in an electric circuit. Simple construction of the alarm box is required. Requires 2 x AAA batteries. Ages 5 and over. Box size: 167 x 215 x 58mm Weight: 450g