describe how the root systems of the mesquite tree and saguaro cactus root systems different. PLZ help me

Three cards with holes are arranged in a straight line. a light is shined through the first card’s hole and travels through all three cards. what does this tell you about light rays? a) that light is reflected b) that light is refractive c) that light travels in a straight line d) that light does not travel in a straight line

The formation of a solid, also known as a is an indication of a chemical change. precipitate particulate particle powder

If 16.00g of hydrogen gas reacts with 126.73g of oxygen, how many grams of water are yielded? (both reactants are completely consumed in the reaction.)