These differences may be of significance in assuring that larvae and adults of the same species do not engage in direct competition for food or living space. Examples of metamorphosis include the tadpole, an aquatic larval stage that transforms into the land-dwelling frog (class Amphibia). Starfishes and other echinoderms undergo a metamorphosis that includes a change from the bilateral symmetry of the larva to the radial symmetry of the adult. Metamorphic patterns are well-known in crabs, lobsters, and other crustaceans and also in snails, clams, and other mollusks.
In addition to income taxes, everyone must pay Social Security and Medicare taxes. If you are self-employed you need to make these tax payments yourself since you donât have an employer to send it in for you. For 2015, employees pay 7.65 percent of their income in Social Security and Medicare taxes with their employers making an additional payment of 7.65 percent.
And most workers will no longer get paper statements that explain how much they have paid into the system and what benefits they are likely to receive in retirement. Here are 10 things everyone should know about Social Security: You contribute 6.2 percent of your income. Workers pay 6.2 percent of their earnings into the Social Security system, up to $113,700 in 2013. Employers pay a matching 6.2 percent for each worker. Self-employed workers must contribute 12.4 percent of their income annually.