Which characteristic of four different dinosaur fossils makes a dinosaur most similar to the present-day birds?

flexible wrist
flapping ability
flight feathers
primitive feathers

What characteristic of long period comets suggest they come directly from the oort cloud?

Click the "draw structure" button to activate the drawing utility. draw two diastereomers of (1z,4r)−1,4−dimethylcyclodecene and name them, including (e)/(z) and (r)/(s) notation. part 1 out of 4 draw the diastereomer containing a chiral center with s configuration here. window open

Which two technologies support the building of single-page applications?