Ova is the plural for ovum, which is the female gamete (sex cell). An ovum can also be called an egg. Its function is to fuse with a sperm cell during fertilization, and create a zygote. This can then go on to create a new organism (offspring).
Three years ago, more than 1.4 million individuals apparently decided they had better things to do than file their 2006 tax returns, even though they were due refunds. In total, more than $1.3 billion worth of refunds from that tax year is still sitting in the Internal Revenue Service account. Taxpayers can still get their old refund checks, which the IRS says could amount to more than $800 for some folks. But the claim, via a 2006 Form 1040, must be made by April 15.
Under Federal law, there is a time restriction on how long the IRS has to collect unpaid taxes. This time restriction is most commonly known as the statute of limitations. For most cases, the IRS has 3 years from the date the return was filed to audit a tax return and determine if additional tax is due. After the IRS determines that additional taxes are due, the IRS has 10 years to collect unpaid taxes. Most taxpayers can rest assured that after 3 years, it is highly unlikely that the IRS will attempt to audit them and assess additional taxes against them. However, there are certain exceptions to these rules.