Precipitation is one of the main processes involved in the water cycle. It involves the formation of water falling to the ground from cloids and transforming into either rain, snow sleet, or hail Which of the following properties of water can be used to explain why when water falls from clouds it is able to form a rain drop? O cohesive ability O universal solvent O expansion upon freezing O moderation of temperature

A sunburn is a familiar example of the effect of ionizing radiation, like ultraviolet light, where longer exposure harms the skin and tissues. At the atomic level, what is being produced by ionizing radiation on skin? O neutrons O protons O light O ions.

You are stranded on a lifeboat with several other people in the middle of the ocean.  You have run out of clean drinking water and are very thirsty.  The others have started to drink the seawater to quench their thirst. Since you’re waiting for rescue (and are a top notch AP Biology student), you decide to solve a couple of water potential problems to determine if drinking sea water is a good idea or not.  a) The majority of dissolved ions in seawater is NaCl, roughly a 0.5M concentration.  The ionization constant of NaCl is 2.0.  Calculate the solute potential for seawater if you know that the water is 2°C. b) Your own cells have a 0.15M concentration.  Calculate the solute potential for your own cells, knowing that body temperature is 37°C. c) Using your knowledge about water potential, if you drink the seawater, wat will happen when the seawater comes into contact with your body’s cells? Note: ΨP for animal cells is zero

When water freezes the bonding of its molecules becomes flexible its density increases it expands its molecules come closer to one another

Describe two properties of water which makes it essential to life as we know it. You need to name the property and describe how the structure of the water molecule allows for these unique characteristics.

The reason water is polar is because Group of answer choices the electrons spend more time circling the oxygen atom than the hydrogens. there is a complete transfer of electrons from the hydrogen to the oxygen. in polar molecules atoms share electrons evenly. hydrophilic molecules interact with water.