A magnesium atom undergoes a chemical reaction in which it becomes an ion with charge 2+. This means that the atom has
changed by
A.
losing two electrons, two protons, and two neutrons
B.
gaining two protons
C.
losing two electrons
D.
losing two electrons and two neutrons
E. losing two neutrons and gaining two protons
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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.

If an organ has six haploid chromosomes,how many chromosomes are present. 6 12

Which describes a grizzly bear’s habitat?