What part of your brain connects to the spinal cord? A. Medulla B. Cerebrum C. Cerebellum D. Right hemisphere

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

The earth's oceans are made up of chlorine, and trace elements. a) carbon, oxygen b) oxygen, silicon c) hydrogen, oxygen d) nitrogen, oxygen

Pulmonary arteries carry highly oxygenated blood. true or false?