Substance A is water and Substance B is chlorophyll
The immune system saves lives. ...
Before scientists understood the immune system, illness was chalked up to unbalanced humors. ...
Two men who unraveled the immune system's functions were bitter rivals. ...
Specialized blood cells are the immune system's greatest weapon. ...
The spleen helps your immune system work.
The answer is; D
Potential energy is the stored energy in an object in respect to the position it has relative to other objects or ground, stresses within it, electric charges it contains, and/or other factors. Therefore, the ball’s relative position to the ground gives it potential energy because it will fall by gravity when released.
The answer is; B
When brakes are applied, the kinetic energy of the car is converted to heat energy (due to friction) as reduced speed and stops. This is in accordance with the law of thermodynamics that stipulated that energy or matter cannot be destroyed or created but can only be transformed.
<h2>
Answer:</h2>
<h3>Evolution may be defined as any net directional change or any cumulative change in the characteristics of organisms or populations over many generations—in other words, descent with modification… It explicitly includes the origin as well as the spread of alleles, variants, trait values, or character states.</h3>
<h3>Natural selection is the process through which populations of living organisms adapt and change. Individuals in a population are naturally variable, meaning that they are all different in some ways. This variation means that some individuals have traits better suited to the environment than others</h3>
<h2>
Explanation:</h2><h2> </h2>
<h2>please mark me brainlist</h2>