Which statement correctly distinguishes between mechanical and electromagnetic waves? A)Electromagnetic waves carry energy through matter; mechanical waves carry energy through space.
B)Mechanical waves carry energy through matter; electromagnetic waves carry energy through space.
C)Electromagnetic waves carry energy through particles that move up and down; mechanical waves carry energy through particles that move side to side.
D)Mechanical waves carry energy through particles that move up and down; electromagnetic waves carry energy through particles that move side to side. what causes a disturbance that results in a wave

measuring light intensity

light meters can be used to measure light intensity. the meter is held at the soil surface and pointed in the direction of the maximum light intensity, and then the meter is read.

errors can be made when measuring light intensity by accidentally shading the light meter. the reliability of the results can be checked by taking many samples.

sound moves fastest in solids because the molecules are tightly packed and it allows sound to vibrate

answer: the correct option is d. enzyme

lactase and carbonic anhydrase are the examples of enzymes.

lactase is an enzyme, which is present in the small intestine of mammals. it in the digestion of the disaccharide, lactose ( milk sugar) by converting it into two monosachharide, which are glucose and galactose.

carbonic anhydrase is present in the red blood cells. this enzyme plays significant role in the transport of co₂. it in the conversion of co₂ and h₂o into carbonic acid, which is then dissociated into bicarbonate ions and hydrogen ions.