How did worldwide infant mortality and life expectancy changed between 1900 ?

Based on the law of conservation of energy, which statement is false? answer- energy is lost when machines dont work right

What stress will shift the following equilibrium system to the left? n2(g) + 3h2(g) ⇌ 2nh3(g) adding more n2(g) adding more nh3(g) increasing the pressure of the system reducing the volume of the container

Long term exposure to waves can cause sunburns and skin cancer. a) visible b) infrared c) gamma rays d) ultraviole