This system of nerves make possible the normal motility and secretory functions of the gastrointestinal tract. what is it called

The body is protected against harmful flu viruses by

Invasive species are one of the major threats to biodiversity. these species multiply quickly and compete with native species for food, sunlight, spac and other resources. on the map, determine the area where native species will have limited resources available to them due to invasion threat from invasive species threat very low low medium high very high

One of the reasons that stars are so large is because