Which activity would be best for 12 year old who had a target rate heart rate for 110 beats

On a time limit! willing to give free 25 points plus brainliest for this drivers ed question if answered correctly : ) systematic searching is a skill that takes to master. a. no time at all b. repetitive practice c. innate talent d. extra gadgets

How do astronomers measure the amount of dark matter in the universe

Which of the following would most likely cause a large number of density independent deaths in a population