Reproduction of placental mammals
How placental mammals reproduce?
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Placental mammals reproduce sexually, they are having internal fecundation and also they are viviparous, which says that their embryo is developed within the mother’s body and it gets the nutrients from her through the placenta.
How gas exchange is done in fishes?
Can the amount of accessible energy in a given tropic level to be higher than the accessible energy in the inferior tropic levels? What does that situation means to the conformation of energy pyramids?
Do bacteria cells encompass the nucleus?
Write down the molecular composition of hemoglobin? Does the functionality of hemoglobin as a protein based on its tertiary or on its quaternary structure?
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What are the major cytoplasmic structures existed in animal cells?
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