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.
Contribution Limits. You can only contribute to your SEP IRA for the previous year if you haven't already maxed out your contributions. For employee contributions, the limit is the same as the traditional and Roth IRA limits -- $5,500 if you're under 50 and $6,500 if you're 50 and older as of 2013.