What are 5 important facts about Polar bears that are linked to their survival on ice and snow

An object weighs 40n in air , weighs 20n when submerged jn water and 30n submerged in a liquid of unknown density .what is the density of the liquid?

How was the appointment of two consuls during the roman republic an example of a democratic principle? one consul represented patricians and one represented plebeians, so that all citizens had representation each consul had control over the same number of military legions, which prevented either one from a forceful takeover. consuls had to agree on all decisions, which prevented any one person from gaining too much power. consuls had to make decisions based on majority rule in the senate. quickly

When recursive formula can be used to determine the total amount of money earned in any year based on the amount earned in the previous years?