Which of following is a true statement regarding living organisms? All living things

Which traits do human embryos have that link them to a common ancestor with fish and reptiles? a. scales and tail b. gill slits and scales c. tail and gill slits d. hair and tail

Drag each label to the correct location on the chart. classify each reaction as endothermic or exothermic.

What layer of the atmosphere is directly above the troposphere?