<span>i think
D. As oceanic crust sank beneath other oceanic crust, the cooling rocks aligned with the earth's magnetic field, which periodically reversed. This periodic pattern was seen on one side of a mid-oceanic ridge</span>
Explanation:
the second one. the crests of the soundwave are farther apart
Plants often go into the dormant state to protect themselves from suboptimal conditions (usually harsh winters). A tough outer covering can protect the plant from freezing, the buds are covered for this same reason. The leaves fall to minimize the loss of energy since in the winter there is usually not enough sunlight to sustain the process of photosynthesis.
Answer:
Scientists are studying regeneration for its potential uses in medicine, such as treating a variety of injuries and diseases.
