COVID-19 is an example of zoonosis: a disease or infection that is transmitted to humans from animals.
To explain the stages of human development, Stacker consulted the “Human Growth and Development” chapter of Wakim & Grewal’s “Human Biology” textbook.
Stacker consulted the NOAA National Centers for Environmental Information Statewide Time Series to rank 49 states according to how much their 2019 precipitat
Stacker highlights 30 out of 71 newly discovered species from 2019, based on research from the California Academy of Sciences.
Stacker has used a variety of sources to compile a list of the official state insect(s) of each U.S. state, as well as their unique characteristics. Read on to see if you can guess which insect(s) represent your state.