What is approximate size of the dna-rna hybrid present inside the rna polymerase?

During the winter, this species of fox has white fur, but in the summer, it has brown fur. what environmental change may have lead to this fox's fur color? snow cover increase in sun's brightness volcanic eruption global warming

Has regulatory areas for thirst, hunger, body temperature, water balance, and blood pressure

Which are characteristics of flukes? check all that apply. a they are free living. b they are a type of flatworm. c they reproduce sexually. d they have eyespots. e they are segmented.