Survival rates of newborns
Average life spans
Death rates
level of and access to medicare
Local diseases with high mortality rates (Malaria,AIDS,Dengue, ETC)
Education levels
Economic levels
Governmental programs or laws (available food) ECT
Temperature/environment conditions
Answer: We can tell how life existed on earth and how different plants and animals are related to each other. Often we can work out how and how and where they lived, and use this information to find out about ancient environments. Fossils can tell us about the past.
Explanation
Quick answer: Food enters the human digestive system through the mouth before then moving through the pharynx, esophagus, stomach, intestines, rectum and anus.
Biological diversity is the variety of species in a given area. If a new species is added there are more species and therefore greater biological diversity and if one goes extinct there are less species and therefore less biological diversity.
