How can you use science to help the less fortunate

Please help no links

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.

Which statement is a physical property? becomes moldy quicklyeasy to digestconducts electricity poorlydoes not burn

Ascientific idea becomes valid when it is what?