A balloon initially has a volume of 45 l at sea level, where temperature is 25∘c and the pressure is 1. 0 atm. It rises to an elevation of 2. 0 km, where the temperature is 5. 0∘c and the pressure is 0. 78 atm. What is the balloon's volume at this height?.

What is the missing step in this proof? scroll down to see the entire proof.u

In the image, layer a is the topmost layer. layer c contains fossils from the precambrian era. layer b contains dinosaur fossils, and layer a contains fossils of mammals. which two statements are supported by this evidence? 1. mammals lived before the precambrian era. 2. dinosaurs and mammals existed in the precambrian era. 3. dinosaurs evolved after precambrian organisms. 4. precambrian organisms evolved after dinosaurs. 5. precambrian organisms were the first life-forms to become fossilized, according to this sample.

Earth takes in thermal energy from the sun in a process called . sunlight strikes earth’s surface at different angles. this angle is called the angle of . btw its