By the end of the first week following conception the fertilized egg now has approximately 100 cells and is known as the _____

Active participation in a church can serve as a buffer for children living in stressful circumstances

Indicate whether this statement is true or false.

When approximately ________ of your brain waves are delta waves, you have entered NREM stage 3 sleep

a) 10 b) 20 c) 40 d) 75