Yes it’s absolutely normal! Mostly we think, we laugh in joy and cry in pain.. right ? Well it’s not so black-and-white we can laugh and cry at the same time. Sometimes in the midst of something funny sadness will be triggered at the situation.
Answer:
O celacanto era há muito considerado um "fóssil vivo" porque os cientistas pensavam que era o único membro remanescente de um táxon conhecido apenas por fósseis, sem relações estreitas vivas, e que evoluiu para aproximadamente sua forma atual há aproximadamente 400 milhões de anos.
Explanation:
Espero que isso ajude !!
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.
Answer:
D.
Explanation:
Explained by natural selection. Those with favored traits in an environment are more likely to survive and pass down the allele. Thus in this situation a grey rabbit is more likely to survive and blend in.
