Answer: The correct answer is "True".
Explanation:
Nephron is a functional unit of kidney. Each kidney contains a millions of nephrons. It contains small blood vessels.
It filters the blood to remove excess water and the waste product from the blood. Then, it returns the cleaned blood back to rest of the body. It selectively reabsorbs the substance such as glucose. It excretes nitrogenous waste such as urea. It removes excess salt in the form of urine.
Therefore, the given statement is true.
A force can cause a resting object to move, or it can accelerate a moving object by changing the objects speed or direction
Yes, you need to understand refraction, because refraction is when an object bends when going into a different medium, meaning, when you put the spear from air to water, it will bend the shape making it harder to spear the fish.
Hopefully that helps!
