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tankabanditka [31]
2 years ago
7

Eggs with tough protective shells developed to

Biology
2 answers:
Paha777 [63]2 years ago
8 0
They developed to be protected by the hard shell from parasites and ther predators.
Mariana [72]2 years ago
5 0

While observing the egg from the external one can witness shell, that is, a hard, protective covering formed of calcium carbonate. The shell is porous, and thus, it permits the transfer of gases via the shell. The moisture and carbon dioxide are given off via the pores and are substituted by atmospheric gases like oxygen.  

The eggs with tough protective shells are developed to safeguard the egg from germs, parasites, and predators.  


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In a species of snail, dark-shelled individuals are better hidden from bird predators in the shady forest, while light-shelled i
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Answer:

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Disruptive selection occurs when two extremes of continuous variation are favored more than intermediate traits.  

The extremes of continuous variation exhibited in this species of snail is the color of their shell which allows them to blend with the background of their habitat.  

The shady forest of the habitat makes the dark-shelled individuals to be better hidden from bird predators, while the light-shelled individuals are better hidden in well-lit brushy edge areas. This disruptive coloration exhibited by both individuals makes both individuals of this species of snail less vulnerable to predation.  

Both individuals of this species both extremities would naturally survive in this habitat as snails with intermediate extremities would be highly preyed on since there is no area of intermediate brightness in the habitat to make them invisible to predators

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3 years ago
Read 2 more answers
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