Chloroplast: Photosynthesis. In photosynthesis, the sun's solar energy is converted to chemical energy. The chemical energy is stored in the form of glucose (sugar). Carbon dioxide, water, and sunlight are used to produce glucose, oxygen, and water.
SEP IRA Contribution Limits 2013. You can contribute up to 25% of your total salary or 20% of your adjusted annual income to a SEP IRA, up to a limit of $51,000 in tax year 2013. This is almost twice the limit for 401(k) investors.
Traditional and Roth IRAs. You can make a contribution to a traditional individual retirement arrangement, or IRA, anytime up to and including the due date for your tax return. That means you have until April 15, 2014, to put money in your IRA and still count it as a contribution for 2013. This IRA rule holds true whether your contributions are deductible or nondeductible. For Roth IRAs, the deadline is also April 15, 2014, for 2013 contributions. If you file a tax extension, you don't get any extra time to make your traditional or Roth IRA contribution. SEP IRAs You can set up a simplified employee plan, or SEP, and make matching and nonelective contributions until the deadline of your business income tax return, including extensions.