Why are certain traits adaptations in one ecosystem, but not in another?
O
A. Ecosystems can have different conditions.
O
B. Organisms can learn new adaptations.
O
C. Organisms lose adaptations when they migrate.
O
D. All ecosystems have the same amount of competition

Choose the best definition of allele. a. one of several possible versions of a gene, which each produce a different phenotype b. an organism that's purebred for a given trait c. the process of fertilizing a plant with pollen from another plant d. a set of genes that are located on the same chromosome and so are tightly linked