Allen’s Rule refers to organisms in cold climates with round body form which has a smaller surface area to volume ratios. Larger bodies are more compact and retain heat.
<span>Bergmann’s Rule refers to organisms in which body size is large in cold climates and small in warm climates. Large bodies have a smaller surface area to volume ratios. In warm climates where you need to expel heat, so bodies are smaller and more linear.</span>
Answer:
d.The wing-assisted incline running theory postulates that wings were initially used to maintain balance while climbing up slopes.
Explanation:
Two theories were given to explain the origin of avian flight. The top-down theory suggested that the birds' ancestors were tree dwelling species. They took help of wings to glide from tree to tree in order to avoid predator or catch prey. The bottom up theory suggested that the birds' ancestors were ground dwelling species. They took help of wings to maintain a balance and provide a lift for efficient running.
Wing-assisted incline running was a mixture of both the above theories and gave a balanced view point. According to it, birds' ancestors used wings to maintain a balance while running up inclined slopes. The wings helped them to save energy while scaling slopes and eventually a flight mechanism was also developed.
<span>D.It has affected the fates of a space probe and a commercial airline flight.</span>
I think it is B I had done these.
