A. Homologous chromosomes recognize each other, aligning themselves along their entire lengths. b. A physical exchange of chromosome pieces that most commonly occurs during prophase of meiosis I c. Protein complex which promote the interconnection between homologous chromosomes during meiosis d. The first stage of prophase of meiosis I. e. Physical structure that is formed when two chromatids cross over

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.