Because you need to find half of 500.
The answer is 250.
The atria are chambers<span> in which </span>blood<span> enters the heart. They are located on the anterior end of the heart, with one atrium on each side. The right atrium </span>receives <span>deoxygenated </span>blood<span> from systemic circulation through the </span>superior vena cava<span> and</span>inferior venae cavae<span>.</span>
Answer:
the answer is differences in heating = C
Explanation:
Answer:
enzyme activity be affected by a variety of factors such as temperature,pH, concentration