A sample of wood that originally contain 10 g of carbon-14 Now contains only 50 g of carbon 14 approximately how many years ago was the sample apart of living tree

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

Plz ! ive been stuck on this forever

Most animal cell membranes have proteins that pump. ions out of the cell and potassium ions into this