What causes the ocean tides to change from high tide to low tide?

If blood contains 150g of hemoglobin per liter of blood, how much hemoglobin would be contained in 10 ml of blood

Avariable that is not being directly tested during an experiment should be changed varied experimented controlled

At 20°c, a sample of h2o liquid and a sample of co2 gas each have the same average kinetic energy. why is one a liquid and the other a gas at this temperature?