Primary dysmenorrhea is menstrual pain with no underlying medical cause. Secondary dysmenorrhea is menstrual pain that results from structural abnormalities or medical conditions of the ...

During the primary infection the antibodies slowly increase, peak at around ten days and then gradually decrease. This primary infection results in the production of memory cells that remain in ...

Moving from primary school to secondary school is an exciting time of life, but for many children it can also be a daunting prospect. A new, much bigger school can offer greater independence ...

It is the heterotrophic equivalent of net primary production by autotrophs. Taken to its extreme, secondary production can represent the formation of mass for an entire trophic level. Animal ...

The secondary market is where securities are traded after they are put up for sale on the primary market. The secondary market provides investors and traders with a place to trade securities after ...

Primary markets sell new securities directly to investors, setting prices via the underwriting process. Secondary markets allow the trading of existing securities, with prices influenced by market ...

Whether they are making circuits, discovering how plants grow or learning how gravity works, our new primary and lower secondary resources help your learners develop critical thinking, communication ...

Primary vs. secondary coverage: Primary allows direct claims, secondary requires filing with primary first. Travel medical insurance provides protection against unexpected illnesses or injuries ...

Secondary markets let investors trade existing securities, providing liquidity and market-driven prices. Companies like Airbnb raise initial funds on the primary market but most trading occurs on ...

Since they create loans, mortgage originators are part of the primary mortgage market, but they often quickly sell their loans into the secondary mortgage market. Mortgage originators make money ...

Primary coverage is preferable, as it doesn’t require making a claim against your personal car insurance first. Secondary coverage can only be applied after your personal auto insurance has been ...

Whether they are making a house with 3D shapes, learning how to gather data or discovering sequences, our new primary and lower secondary resources help your learners develop critical thinking, ...