Which is a scientific question? can cats learn to sit down on command? why do black cats bring bad luck? are spotted cats cuter than solid-colored cats? why are persian cats so funny?

If someone could do the first couple, just so i can see how it's done that would be great! 20 points. complete a dichotomous key for the 10 leaves on the common leaves sheet. the chart provided here allows for 11 pairs of statements. depending on how you build your dichotomous key, you may or may not need all of them, or you may need to add some.

The earth's oceans are made up of chlorine, and trace elements. a) carbon, oxygen b) oxygen, silicon c) hydrogen, oxygen d) nitrogen, oxygen

Communication and transportation have improved as a result of scientific advancements. select the best answer from the choices provided of mark this and return save and exit next