Correct answer only ! fill in the blank with the correct present progressive form of the verb. be sure to only write the conjugated verb. do not rewrite the entire sentence. en el parque, hay algunas personas que (estar correr).

answerestan corriendo; i believe this is correct, plz check first good luck;

when the outside temperature is too cold, an endothermic animal can generate heat by shivering. endothermic animals must eat much more often than ectothermic animals since it takes energy to maintain a constant body temperature.