Which geographic feature marks the division between central america and south america?

Why does physical weathering speed up the processes of chemical weathering? a) physical weathering requires abundant water, as does chemical weathering. b) physical weathering produces fresh surfaces for chemical weathering to attack. c) chemical weathering can occur only on small surfaces, not large ones. d) chemical weathering requires salt, which is provided by salt wedging.

What is the amount of organic matter in all living organisms in a habitat called?

The body paragraphs in an informative essay should include clear examples. a thesis statement. restated evidence. a clear direction.