Practice check: Which option answers this correctly: what is the chemical formula of water?

✅ C. Milk

✅ A. Red blood cells

a: Red blood cells | b: Plasma proteins | c: Platelets | d: White blood cells Read more

✅ C. Gills

✅ D. Carbon dioxide

a: Neon | b: Helium | c: Argon | d: Carbon dioxide Read more

✅ C. Steam contains more energy than boiling water

✅ C. Condensation

a: Sublimation | b: Melting | c: Condensation | d: Evaporation Read more

✅ B. Mars

✅ B. Ozone layer

a: Troposphere only | b: Ozone layer | c: Inner core | d: Mantle Read more