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kaheart [24]
3 years ago
14

Populations of coastal lodgepole pine are separated along an environmental gradient of soil pH that changes from neutral pH near

the shoreline to extremely acidic pH approximately 8 km away from the shore. Populations of lodgepole pine inhabiting the ends of this environmental gradient (i.e. neutral pH versus extremely acidic pH soils) have diverged in a number of phenotypic characters, as well as cannot interbreed. What model of speciation is this pattern consistent with?
Biology
1 answer:
77julia77 [94]3 years ago
7 0

Answer:

Parapatric speciation  

Explanation:

There are different types of speciation. Parapatric speciation consists of new species evolving from a continuous distribution. That is, there is no physical barrier that might impede the gene flow,  in fact, it might continue during the speciation process.  

There is an environmental gradient that determines different phenotypes for different environmental conditions. One phenotype is more adapted to one of the distribution extremes than the other phenotype. In the exposed case, the environmental gradient is given by the differences in pH.

In the border between the environmental extremes, there is the primary hybrid zone, where both phenotypic forms might meet and hybridize.

   

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Verdich [7]

Answer:

B)  The mass of the reactants equals the mass of the products,

Explanation:

Given that the reaction is balanced, the mass of the reactants must equal to the mass of the products.

We know this by virtue of the law of conservation of mass.

 The law of conservation of mass states that "in a chemical reaction, matter is neither created nor destroyed but atoms are rearranged".

 Therefore, if the reaction is chemically balanced, the mass of reactants must be the same as the mass of the products in the reaction.

The second choice is the right one.

8 0
3 years ago
Why isn't the longest day of the year the hottest day of the year?
Pachacha [2.7K]
The longest day of the year isn't the hottest day of the year because the phenomenon of the hottest weather following the summer solstice by a month or two is called the lag of seasons.
5 0
3 years ago
14. A structure with a chain of carbons and hydrogens with a COOH at the end will represent which of
pychu [463]

Answer:

The correct answer is a Protein

Explanation:

Proteins are macromolecules consisting of amino acids which are joined by peptide bonds.

         Protein molecule has two ends,  amino(-NH2) group is present at one end that is known as amino terminal end or N terminal end whereas carboxyl group is present at the another end that is called carboxy terminal end or C terminal end.

3 0
3 years ago
Why does ice become less dense than water?
myrzilka [38]
Ice actually has a very different structure than liquid water, in that the molecules align themselves in a regular lattice rather than more randomly as in the liquid form. It happens that the lattice arrangement allows water molecules to be more spread out than in a liquid, and, thus, ice is less dense than water.
8 0
3 years ago
What is a distinguishing characteristic of a saturated fatty acid?
goldfiish [28.3K]

Answer:

Saturated fatty acid lack double bonds between the individual carbon atoms.

Explanation:

May be this will help you.

3 0
3 years ago
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