Briefly explain how each of these groups works together to help the next level operate. For example, individual people work together as a community to keep the city they live in running

The body is protected against harmful flu viruses by

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?

Twind is considered to be an abiotic factor because it.?