Polka dots never go out of style, and these 45 polka dot nail ideas are the perfect mix of retro and fresh The post 45 Polka Dot Nail Ideas That Feel Retro and Fresh at the Same Time appeared first on ...

Intrinsic water-use efficiency (iWUE) reflects how efficiently plants assimilate carbon relative to water loss at the leaf level. While widely studied using carbon isotope and gas-exchange ...