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Hunter-Best [27]
4 years ago
14

What is the placenta, and what is its role in fetal circulation?

Biology
1 answer:
mote1985 [20]4 years ago
7 0

The prenatal circulation of blood is different than the postnatal circulation, mainly because the lungs are not in use. The fetus obtains oxygen and nutrients from the mother through the placenta and the umbilical cord. Blood from the placenta is carried to the fetus by the umbilical vein.

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A census area based on commuting patterns is called a
ArbitrLikvidat [17]
The answer would be combined statistical area. This is made of metropolitan and micropolitan statistical area which would be located in the United States as well as Puerto Rico that demonstrate both economic as well as social linkage.Hope this is the right answer.
3 0
4 years ago
What change do you observe in three seed if you use boiled and cooled water of tap water in breaker​
Gnesinka [82]
Not sure but hope this helps!
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5 0
2 years ago
Which statement best compares the moon and Earth? Group of answer choices
Anna007 [38]

Answer:

To be honest, it's optional so hope these answers will work for ya!

Explanation:

*Earth has atmosphere and life while the moon doesn't

*Earth has weather and seasonal changes

*Moon has satellite's that we set up and use

*Types of erosion:

Earth: wind, water, ice, and heat

Moon: impact

*Landscape:

Earth: of course we all know... -._-.

Moon: craters, dust, and rocks

<em>HOPE THIS STILL WORKS! ˋ( ° ▽、° ) </em>

8 0
3 years ago
6. In a Bio 207 lab you determine that the cost of transport for two fish from different species is 1 kJ/km for fish one, and 10
pshichka [43]

Answer:

b) fish two has a metabolic rate 10 times higher than the metabolic rate of fish one.

Explanation:

The fish one covers 1 kilometer distance by using 1 kilo Joule of energy while on the other hand, fish two covers consumes 10 kilo Joules of energy for covering the same distance i.e. one kilometer. This means that fish two has a metabolic rate 10 times higher than the metabolic rate of fish one. This high metabolic rate may be due to the higher mass of the fish two which needs more energy for the movement to cover distance of one kilometer.

7 0
3 years ago
How is the scientific law different from scientific theory ​
poizon [28]

Scientific law is observations and theory is explanation.

4 0
3 years ago
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