In the case of the Bombina frogs, the evidence that hybrid zone
stability is occurring was the consistent pattern from annual to annual of declining
frequency of yellow-bellied toad alleles with distance from the edge of their
range. This is a clear evidence that hybridization is taking place yearly in
the Bombina frogs.
Phototropism is when a plant moves towards the sun. Geotropism deals with gravity. It is the turning or growth movement by a plant in response to gravity. This helps the plants roots go deeper ir grow in different directions to find water.
Chemical Weathering<span> results from chemical reactions between minerals and Water. Water dissolves calcite </span>more<span> readily than it </span>does<span> feldspar, so calcite is considered a chemical reaction with water.
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I know only three specific ones. They are: forebrain, midbrain, and hindbrain.
<span>In order for a climate to be considered "arid", a region/land must have scare rain that does not support the growth of vegetation. It is thought to be an areas that has minimal water sources that cannot produce greenery or other foliage. Arid can be considered extremely dry which will impact the surrounding land's ability to support growing life including plants and other animals.</span>
