true or false PEEP lowers cardiac output by decreasing venous return to the heart and decreasing perfusion to the organs in the abdomen and kidneys?

What is crystallographic data processing and structure determination? what are the physical infrastructures of x-ray crystallographic structural biology? who can tell me detailed information? any would be appreciated. in advance!

What part of the menstrual cycle is the femal most likely to get pregnant and why

Why do you think people write one way and speak to people a different way?