In the deep ocean, currents are what sea creatures use to travel at a faster and easier rate. If these currents decrease than it would be hard for them to travel. For example, if a sea turtle needed to lay her eggs, but there was no current, she might not get to land on time before she has to lay them.
the 5-to-3 direction of one strand is counter to the 5-to-3 direction of the other strand.
I believe (1) fertilization is correct
"Large, sweeping andfundamentalLong-term andirreversibleTransformationalSmall-scale andincrementa"
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