Answer:
a chemical process in which substances act mutually on each other and are changed into different substances, or one substance changes into other substances.
This happens in the second trimester. I'm pretty sure that's the right answer. I hope it helps!
A - at the time the even occurs
Answer:
Kindney Cancer
Explanation:
Cancer in the kidneys can lead to a lack of enough red blood cells, called anemia. Red blood cells transport oxygen to your body's tissues. When you don't have enough of them, you'll become tired, pale, and short of breath. Renal cell cancer can also release substances that increase your blood pressure.