Who discovered the human blood groups?

What are two ways in which waves erode the land?

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

What is the importantence of the carbon and nitretan cycles in the environment