Through the actions of alleles
Answer:
C. Both (a) and (b)
Explanation:
Hunting, destroying habitats, polluting and introducing non-native species can cause extinction.
I think the answer would be D since the definition of heredity is <span>the passing on characteristics genetically from one generation to another.</span>
Carbon forms the key component for all known life on Earth. Carbon is the basis of all molecules. Its is easily able to bond because of the 4 valence electrons.