Bruh help pls Which energy transformation will occur when this rubber band is let go?

A. Mechanical energy ➡️ electrical energy
B. Chemical energy ➡️ mechanical energy
C. Elastic energy ➡️ chemical energy
D. Elastic energy ➡️ mechanical energy

Water is important for the of cells. a: size, shape, and temperature b: temperature, color, and odor c: color, odor, and size d: shape, temperature, and color

Which set of characteristics best describes igneous rock? a) largest type of rock, made of organic matter, hardest type of rock b) least abundant type of rock, made of other rocks, made mostly of minerals c) found on all continents, contains wavy bands of stripes, contains fossils d) most abundant type in earth's crust, made of magma/lava, contains no fossils

Answer asap : ( a. how does mucus prevent the entry of pathogens? b. describe two ways white blood cells protect us from pathogens.