They use rocks! hope this helps you!
D.) A secondary pollutant caused by a chemical reaction between pollutants and light.
Gravity is<span> the force that pulls vehicles toward Earth. It depends on the mass of the object. The bigger the mass the bigger the gravity force. </span>
Gravity has a higher effect on heavy, large and high profile vehicles. The heavier the vehicle the bigger the force that pulls the vehicle toward Earth.
The statements are true.
Hemoglobin (Hb), is the oxygen-transport metalloprotein which contains iron in the centre of its structure. This metalloprotein is found in the red blood cells (erythrocytes). The function of hemoglobin is to transport the oxygen through the blood carries from the lungs to the rest of the tissues. Oxygen is necessary for the aerobic respiration in order to provide energy for the functions of the organism (metabolism).
Water is a polar molecule because its opposite ends have opposite electric charges.
