For those fluent in Spanish, please help

45=B

46=B

47=A

48=A

49=B

50=A

beatriz just sent me an electronic message with a picture of my granddaughter.

what do i do to see the photo?

do i click here to open it?

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.