what would happen to the ecosystem if polar bears were removed?

Efficiency is the percent of work put into a machine by the user (input work) that becomes work done by the machine (output work)

You need to make 500ml of 7h9(+) media with 1x adn and 30ug/ml of the antibiotic kanamycin. your stock solutions are 10x adn and 30mg/ml of kanamycin. the solvent is distilled water. how much of each component will you need to make the desired final solution?

Animals that have thick fur and ae able to store large amounts of body fat live where ?