Answer:
D. Thr availability of safe places to rest
Explanation:
Thats like saying people could die because they don't have a place to sleep
Floods (when it rains a lot, rivers tend to keep rising which leads to flooding )
Answer:
is one in which blood flows through two capillary beds before being sent back to the heart.
Explanation:
A portal system can be defined as a system of blood vessels having a capillary network at each end, meaning that the blood vessel starts and ends in capillaries, before finding its way back to the heart. The blood draining through the capillary bed flows via the larger vessel to supply the blood to the another structure's capillary bed.
