Going down A-D
Going across is 1-4
A 4
B 3
C 1
D 2
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The alula is a small structure that is found on birds. It is located at the joint between the hand wing and the arm wings of birds and it is the freely moving, first digit of a bird's wing. It is normally used by birds in slow flight. In humans, the structure that is comparable to the alula is the thumb.
Answer:
Evolution provides evidence as to how animals such as birds are related to much older animals. Over time, species evolve and adapt to their surroundings to suit their habitat. Thus many different species pop up. This all doesn't happen in the blink of an eye, though.
I recommend you to try analyzing this excerpt in order to compile your own response towards the depicted situation. As for me, there is one stated truth: if someone is really wise and assured that his sphere of occupation is reasonable , this person would never persuade people to believe him/ her and stand on his/her side, because this person does not have doubts about that. Does not matter in what such people believe, they do not have to prove it to anyone who does not shares their views.
Answer:
The element carbon is actually the chemical basis for all life. It is the most important because it can be used to form many essential compounds.
Carbon takes up almost 20% of the weight of an organism, and it is essential for them to live and grow. (Also to reproduce.)
