What four factors influence reaction rate and how?

nature of the substance

pressure

temperature

pH value

Explanation:

nature of the substance: it can be in a solid or granules form, so the rate at which granules dissolves in reaction is very fast than that of solid.

Temperature:also temperature of the substance differs as such it influence reaction rate.

pressure:so many substance have different value in pressure an as such it brought about influence in reaction rate

1. glaciers are melting

2. more water going into ocean (water's such as fresh waters, etc)

answer: land bridge theory. land bridge theory held that shifting portions of dry land explained the finding of identical species on different continents. plate tectonic theory eventually eliminated the land bridge theory.