The main difference between ponds and lakes is that ponds a. are inland bodies of water b. do not develop self-contained ecosystems c. are smaller than lakes d. have easily observed currents

Ablastocyst is a group of cells that forms after a human egg is fertilized. the blastocyst consists of two types of cells. some of these cells will become the placenta. what do the other cells develop into?

If you have a difficult time knowing where your hand is without looking at it you may be having a problem with your what ?

Monitor and apply fix up strategies