Answer:
B. Australia is isolated
Explanation:
They originated in South America and spread throughout the world, but due to competition on other continents, the other marsupials died out, while the ones on Australia lived.
Answer:
Where is the question photo
Different versions of a gene are called alleles. Alleles are described as either dominant or recessive depending on their associated traits.
49; Number of Electrons = Number of Protons = Atomic Number