Wait, you have to sketch this stuff? Then YOU need to sketch it. No offence, just no one is gonna sketch this for you.
If the results of an experiment have different conclusions, something must have changed. these are called **variables**. if more than one variable is changed, the result would be different. because the total conclusion is different, it is a hypothesis, because it is not universally true.
Answer: Option D) Norepinephrine
Explanation:
Norepinephrine, also known as noradrenaline acts as both a hormone and neurotransmitter.
Its effects is similar to epinephrine, in that during stress conditions epinephrine stimulates the heart to beat and pump blood faster, while norepinephrine helps to maintain blood pressure, causing the narrowing of the blood vessels, known as vasoconstriction.
The male structure, called the testes
