What problem did the crew of Biosphere 2 face? A.
A virus from one of the animals
B.
A loss of oxygen
C.
One of the crew members developed cancer
D.
The crew ran out of food.

b and d

Explanation:

The Biospherians had to break into a three-month supply of food that had been secretly stored away before the doors had closed. Then Biosphere 2 began to lose oxygen because the soil had spawned an explosion of oxygen-gulping bacteria. The crew felt as if they were living at 14,000 feet.

im not in connections yet but i might can you some questions. what grade are you in?

cells spend most of their time in interphase