A polar bear starts at the North Pole. It travels in a triangular path 1.0km south then 1.0km east and then 1.0 km north to return to the starting point. This trip takes 45 min. What was the bears average speed?

What are the theoretical properties of a gas at a temperature of 0 kelvin?

In which situation has the independent variable for the experiment been changed? check all that apply. changed from counting the number of duckweed at day 0 and day 14 to counting them every day changed from testing duckweed growth in beakers to testing duckweed growth in large outdoor tanks changed from testing the effect of ph on duckweed growth to testing the effect of light levels on duckweed growth changed from testing the effect of acid ph on duckweed growth to testing the effect of basic ph on duckweed growth

Why don't you see your reflection in water with waves or repples