What type of relationship exists between the altitude and the atmosphere density and what would the atmospheric density be at an atlitude of 1291 k

What are similarities and differences between refraction, reflection, diffraction and absorption?

Which of these questions might a character ask if the conflict is man versus self? a. which path should i take to better myself? b. which boulder will be too heavy for me to carry? c. which friend is going to ditch me today? d. all of the above

Which bonds are found inside a water molecule