Which option correctly answers: what is sustainable development?

✅ C. Walter Hunt

✅ B. Using efficient appliances and switching off unused devices

a: Blocking ventilation filters | b: Using efficient appliances and switching off unused devices | c: Opening a refrigerator door for long periods | d: Leaving every light on Read more

✅ C. Red blood cells

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

✅ B. An area where water covers or saturates the soil for part or all of the year

a: A dry dune | b: An area where water covers or saturates the soil for part or all of the year | c: A volcanic crater only | d: A glacier peak Read more

✅ B. Protons

✅ D. Controlled decomposition of organic material

a: Mining coal | b: Burning plastic | c: Distilling seawater only | d: Controlled decomposition of organic material Read more

✅ B. Insect

✅ D. Gravity

a: Magnetism | b: Friction | c: Buoyancy | d: Gravity Read more