Línea de tiempo, indicando la formación de una estrella, hasta su fin

An atom of nitrogen had seven protons in its nucleus. how many electrons does it have

Which flexible structure that supports the nerve cord and led to the backbone

African penguins, which inhabit the coasts of southern africa, were classified as an endangered species in 2010. two significant threats to their survival are ecosystem damage from oil spills and overfishing by humans. overfishing depletes the food supply of african penguins. the best method to reduce the threat of overfishing would be to . the risk of oil spills could be reduced by increasing the use of , which should oil consumption. if an oil spill does occur, could be used to remove the oil so the ecosystem may more quickly recover.