building block for the new double helix strand.
Can you show us the picture or sum
The answer is;
The rift valley formed when the crust pulled apart.
The rift valley formed at a divergent boundary.
Divergent boundaries occur when two adjacent convection currents in the mantle are spinning in opposite directions. This causes the upper crust to stretch creating tension due to drag in different directions on the local region. The tension causes the crust to crack severally and the middle crust block dropping in comparison to flanking regions.
Answer:
Hypothesized causes for the declines include habitat destruction (the most obvious cause), climate change, pathogens, introduced exotic species, pollution, and increased UV radiation. These agents may act alone or in combination to contribute to the decline of amphibian populations.
Explanation:
I think this is the answer
Hope it helps you
