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Dahasolnce [82]
3 years ago
7

Seth purchased five pounds of live crayfish and realized that the outer shells were made of a tough carbohydrate similar to that

used to make the carapace of a cockroach. What do you think the outer shells of the crawfish are made of?
Biology
1 answer:
Volgvan3 years ago
7 0

Answer:

Calcium Carbonate or Lime Stone

Explanation:

The outer hard shell of cray fish is made up of CaCO3 from sea sediments. It as analogue to the carapace of cockroach because both belongs to the phylum Arthropoda. Although they have different classes but their exoskeleton shares same composition and internal structure. Both use this to protect themselves against predators.

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77julia77 [94]

Answer:

A energia térmica não pode ser criada nem destruída, apenas convertida em outras formas de energia.

Explicação:

Os princípios da termodinâmica nos levam a concluir que a energia térmica não pode ser criada nem destruída apenas convertida em outras formas de energia. Essa energia térmica pode ser convertida em energia mecânica, elétrica e outras formas de energia. A energia térmica também é liberada quando o alimento ingerido pelos herbívoros, apenas 10% da energia é transferida de um nível trófico para outro, enquanto 90% da energia é liberada para a atmosfera.

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2 years ago
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Hope this helps... Stay safe and have a great day/night!!! :D

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