6. Which is the youngest holiday: "Earth Day" or "Arbor Day"? HELP QUICK PLEASE ILL GIVE BRAINLIEST

Plsss > .< compare and contrast the characteristics of flatworms rounds worms and earthworms

The energy required to vaporize a certain amount of a substance is greater than the amount of energy necessary to raise the temperature of the same amout of that substance by 1 degreee celcius

The distant ancestors of tigers may have had bodies without stripes. use the theory of natural selection to explain how tigers may have evolved to have stripes.