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Ugo [173]
3 years ago
13

In humans, the placenta is essential to the embryo for

Biology
2 answers:
dlinn [17]3 years ago
7 0
In humans, the placenta is essential to the embryo for RESPIRATION, NUTRITION AND EXCRETION.
The placenta refers to an organ in the uterus of pregnant mammals that is responsible for nourishing and maintaining the unborn baby through the umbilical cord. Th placenta has many functions but primarily it plays critical roles in the nutrition, respiration and excretion of the fetus. Its other functions include: production of hormones, production of immunity for the fetus for prevention from infections, etc. <span />
LenaWriter [7]3 years ago
7 0
The placenta is essential to an embryo in a human for nutrition, excretion, and reproduction. The placenta is where the embryo gets all of its nutrition from. The embryo relies on the placenta for everything to make it live and grow. 
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skelet666 [1.2K]
Diploid cells are like daughter cells coming from a mother cell called a haploid cell. So the more daughter cells are born, the greater the chance of getting hybrids and creating more diversity on the genetic races existing. In this case, the answer would have to be honeybees.
6 0
3 years ago
A pediatrician designs baby formula to help babies gain weight. To show his formula works, he compares the weights of babies tha
Lelechka [254]

Answer:

Dependent Variable: Babies that use the formula

Independent Variable: Babies Without the formula

Explanation:

As the formula dose Increases, So does the weight of the babies (figurativly)

This is the Dependent variable because it depends on another factor

The Independent variable doesn't depend on the amount of formula taken because it doesn't use the formula, therefore it doesn't depend on anything, its Independent.

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2 years ago
What is the keystone species of the food web shown below?
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D phytoplankton i believe

6 0
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Thats true _____________________________________________________
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