What process can occur between non-homologous chromosomes while in the tetrad configuration?

Coquina, a type of limestone, forms from shell fragments that settle on the ocean floor. what type of rock is coquina?

How does upwelling affect coastal fisheries? upwelling damages nutrient supplies at coastal fisheries as the warm, nutrient-rich surface water is replaced by nutrient-poor, cold water. upwelling damages nutrient supplies at coastal fisheries as the cold, nutrient-rich surface water is replaced by nutrient-poor, warm water. upwelling improves the nutrient supply at coastal fisheries as the warm, nutrient-rich surface water replaces the nutrient-poor, cold water. upwelling improves the nutrient supply at coastal fisheries as cold, nutrient-rich water replaces the warm, nutrient-poor surface water.

Which macromolecule catalyzes chemical reactions this be considered enzyme chemical reactions thus he considering enzymes