You will also like...
Neurons generate electric signals that they pass along to the other neurons or target tissues. In this tutorial, you wil..
Hormones are chemical messengers produced by specialized glands and they were produced by switching on the genes designe..
Homeostasis is essential to maintain conditions within the tolerable limits. Otherwise, the body will fail to function p..
For human species to obviate extinction, reproductive mature adults should be producing viable offspring in order to con..
The sea was teeming with life. Eventually, through reproduction and continued variation, fish came about. There are over..