What is more dense, a rock or water and why?

A new computer virus attacks a folder consisting of 200 files. Each file gets damaged with probability 0.2 independently of other files. What is the probability that fewer than 50 files will get damaged? g what effects can physical systems have on the planet? Even though you are getting closer to the sun as you ascend into the troposphere, why does the temperature drop?the lower atmosphere is heated by the groundwarm air stays below cold airthe troposphere is a stable layerozone blocks the sunlight Which phrase describes air pressure? How does the spread of an airborne pathogen compare to the spread of foodborne and person-to-person pathogens Cutting "steps" or terraces into the sides of hills is one way toA. increase arable land for farmingB. decrease the risks of floodingC. store water during times of droughtD decrease agricultural yields 88-55+ 5x-7=180Find the value of x Use the numbers 2,4,6,8 to make 60. You can use any operations and use brackets as well. There are 9 girls and 11 boys in a class at a PrivateSchool. Of these students, 3 girls and 4 boys are inthe Running Club. What percentage of the studentsat this Private School are in the Running Club?________%i needdd help plzzzzzzz Why was there no tool that identified the measurement of longitude? Determine whether AB and CD are parallel, perpendicular,or neither.A (12,3), B(-3,9), C (-6,4), D (-2,-6) Do you think the American Dream represents the same thing(s) for all Americans? In other words, do you think all Americans equally value the same thing(s) in our country? Why or why not? will brainlist 13. Here is the motive:What variation technique is used to develop the motive in measures 17 - 20? Please select the word from the list that best fits the definition"It leaves the reader wanting more."A. OrganizationB. Fluency *this isn't the answer*C. Word choiceD. VoiceE. Conventions F. Ideas Why do factors the cause a change in individual supply also affect the market supply curve can i have the answer please What are the inputs and outputs of photosynthesis?Pls, help ASAP! This is trigonometry and I need to find angle yxz and the answer has to be to 3 sf Which type of music made use of unusual yet basic scales called church modes?A motetB secular music C estampieD gregorian chant I need help solving all of these problems help plsss! helpppp