protected void eatCombinationTwo() {
	int yellow = 0;
	int red = 0;
	for (Iterator<Plant> it = plants.iterator(); it.hasNext();) {
	    Plant pl = it.next();

	    if (pl.getType() == Plant.YELLOW_PLANT && yellow < 1) {
		it.remove();
		yellow++;
	    }
	    if (pl.getType() == Plant.RED_PLANT && red < 1) {
		it.remove();
		red++;
	    }

	    // stops looping than required
	    if (yellow == 1 && red == 1) {
		break;
	    }
	}
	energy += COMBO_TWO_AMOUNT;
	System.out.println("The combo 2 " + energy);
	WorldFrame.log.append("Simple Creature " + getCreautreNumber()
			      + " ate a combination two  \n");
    }