What is the meaning of iud

Natalie had random hand movements when she was two months old. when she was six months old, she used to grab a block with her whole hand. now at the age of ten months, she can grasp the same block with her thumb and forefinger. this sequence of growth in her hand and finger movements is according to the pattern.

Which experiment would most likely contain experimental bias ?

Which of the following are responsible for sending messages from the hypothalamus to the thalamus?