Chimneys are typically vertical, or as near as possible to vertical, to ensure that the gases flow smoothly, drawing air into the combustion in what is known as the stack, or chimney effect.
Answer:
A mechanical brake applies a friction force to convert the kinetic energy of the vehicle into thermal energy which then dissipates into the atmosphere. As with any system, the process of braking must follow the principle of conservation of energy.
PLEASE SAID THANKS
I believe it's D <span>.DNA repair enzymes often repair errors.
</span>I believe this because enzymes<span> remove incorrect bases with a few surrounding bases, which </span>are<span> replaced with the </span>correct<span> bases with the help of a DNA polymerase and the template DNA. When replication mistakes </span>are<span> not corrected, then it may result in </span>mutations<span>, which sometimes </span>can<span> have serious consequences.</span>
