5 The Resurrection Fern (Selaginella lepidophylla) can shrivel up into a ball and remain that way for many years. When moisture is available, the dry leaves absorb the water and unroll. The plant will then turn green and grow. Under which
environmental conditions did this ability develop?
A Atmosphere with little carbon dioxide
B Climate including periods of prolonged drought
C High density of many competitor plant species
D Abundant insect pollinators of many varieties