7. Which of the following is always true when a substance undergoes a
phase change? *
O A. The molecules keep moving at the same average speed.
B. The substance becomes a liquid as it heats up.
C. The melting point of the substance changes.
D. The substance is made up of the same type of molecules.

schroedinger thought that electrons How does the abundance of hydrogen and helium support the Big Bang Theory? A set of average city temperatures in May are normally distributed with a mean of 20.66 degrees and a standard deviation of 2 degrees. The average temperature of Singapore is 26 degrees _________ is an employee's hard work and diligence.a) punctuality b) work ethic c) attitude d) honesty iven: PA = PC and BA = BC. Use the diagram to find the length described.Suppose PA = 15 cm and PB = 9 cm. What is the length of AC?pabcAC is cm in length. In MNO, the measure of O=90, OM = 1.8 feet, and NO = 4.1 feet. Find the measure of M to the nearest degree. One dollar can buy a bottle of mineral water two empty bottles can be exchanged for a bottle of mineral water question:how many bottles of mineral water can you drink at most with 20 dollars Why is international trade important to most countries?A. Trade allows countries to acquire natural resources not found intheir own territories.B. Trade ensures that countries will not create trade deficits thatharm their economies.C. Trade protects countries from economic competition withneighboring countries.D. Trade encourages countries to produce all the goods their citizensneed. Which is not a unique property of water The cycle of the moon circling the earth is _________ Being that the Constitution condoned slavery why did Benjamin Franklyn recommend its passage being that he was President of the Abolition Society ?CAN SOMEONE PLEASE ANSWER THUS FAST!!! Which word best completes this sentence? El sbado pasado ______________ hasta la casa de mi abuelita porque no encontr un taxi. A. fui B. hice C. compr D. camin 1)) The average depth of a lake is 10 meters. Do you think sunlight acts a limiting factor the same way it does in the ocean? Why or why not?2)An area with a high population of crayfish in local lakes and rivers has begun experiencing acid rain, rain that has a pH of 3.0 - 4.0. Predict how this rain will impact the crayfish population. all of these bodies of water are associated with the continent of africa except one. which of these is not found in Africa?A. Nile river B. Atlantic oceanC. Huang he riverD. Mediterranean river Please answer correctly and quickly*Thank You* Find the area of the shape shown below What value of makes the statement true? cos()=sin(/310) round 803 to the nearest ten. Enter your answer in the box below. what does the author want readers to understand about popularity and bullying Who killed king von? if yall know yall brainliest Which is NOT true A. Vent organisms thrive in high levels of sulfuric acid B. photosynthesis probably evolved before chemosynthesis C. vent communities can thrive at temperatures greater than 700 F D. Vent organisms thrive at 1000 times surface atmosphere pressure