Does the law of Entropy apply to organic material?

The law of entropy applies to closed systems, where there is no external energy (or resource) input. The earth is not a closed system. The sun continually supplies new energy to drive the system, so things get more complex. Of c ourse over time frames of billions of years, the sun will gradyally get hotter (that's how fusion works) then go nove, then get cooler and the solar system and the earth (if it survives the nova) will gradually wind down, and systems will get simpler. You simply have to look at the big picture, if you're going to talk about entropy. The creationists who use this as an argument aainst evolution are misapplying the concept, as they always do. No surprise there.

iron rusts, organic matter decays.
Heres a little experiment you can do at home.
1Take a pound of freshly wrapped hamburger and unwrap it

2 Place it on a plate an bring to room temperature

3Keep it at room temperature for about 6 weeks.

4 What you smell is what we call decay.

Cheers Jack, question answered

do I have to.... my wife doesn't generally like me doing experiments in the house

However, note that it requires life (=consciousness) to define "simple" and "complex" !