Hmm, first of all, the angular size of the moon is around 
. When we measure sizes of objects in the sky, we cannot determine how far each of them lies and we cannot acoount for that; so for example, the sun and the moon have roughly the same size on the sky, despite the sun being much bigger in reality. This "sky-size" is measure with how big an angle the spherical object takes up in the sky (and specifically how big an angle a diameter of that object takes up). A whole circle around the night sky takes up 360 degrees, so 720 moons could fit in this circle (approximately). We see that a degree is a big unit of measurement, so we have smaller ones. Degrees have a subdivision, arcminutes. One arcminute is 1/60 of a degree. Thus 1 degree has 60 arcminutes in it. Hence, half a degree contains 30 arcminutes. Thus, the moon has roughly an angular size of 30 arcminutes.
An extinct species is no longer living on Earth and will never again live there. What characteristics make a particular species
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