What are two different forms of a single gene called? O factors
O chromosomes
O alleles
O traits

Environmental differences within ecosystems are generally caused by

Twind is considered to be an abiotic factor because it.?

Cassandra made a venn diagram to compare and contrast the two stages of cellular respiration. which belongs in the area marked x? energy is released. oxygen is used up. glucose is broken down. carbon dioxide is used up.