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gregori [183]
3 years ago
13

How placenta is design to provide nutrition to developing embroy

Biology
1 answer:
BartSMP [9]3 years ago
5 0
The placenta is the interface between the maternal and embryo's blood, and allows for the exchange of nutrients, including oxygen and carbon dioxide exchange, but prevents certain drugs and chemicals from reaching the embryo. Its a bit like a security guard that only lets certain things though to the baby.
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What is the effect of uneven heating of the earth's surface on the environment ​
zhannawk [14.2K]

When people speak about convection, they are usually referring to the uneven heating that occurs on the surface of the earth.

Consequences of an inconsistent heating system:

Because of the disparity in temperature distribution, certain areas of the environment are hotter than others, and there are also shifts in volume and tension as a result.

It generates updrafts, which in turn may lead to thunderstorms and other types of severe weather.

The Earth has moved slightly on its axis.

Because the sun's rays are directed directly at the equator, the temperature there is higher than in other parts of the planet.

As you approach farther north or further south of the equator, they drop down in an incline or at an angle.

Because of this, the temperature of the earth is uneven, which in turn shapes the wind and the flow of the sea and makes it possible for life to exist.

To know more about thunderstorms click on the below link:

brainly.com/question/6838263

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3 0
2 years ago
Which best represents the role of the cell cycle in repair of an organism
maria [59]

Answer:

An active cell cycle in a child

Explanation:

7 0
3 years ago
Read 2 more answers
Help me on a and b plz
Nataly_w [17]

Heat is one of the processes in which energy is lost.

Metabolic Activity is also a reason why energy is lost through each trophic level.

I hope that this helped you out hun :)

7 0
3 years ago
Helpppppp HAHAHAHHAHA IM STRUGGLING
OlgaM077 [116]

Answer:

Option D = 3.4 g/mL

Explanation:

Given data:

Volume of water = 21.2 mL

Volume of water + object = 27.8 mL

Mass of object = 22.4 g

Density of object = ?

Solution:

First of all we will calculate the volume of object.

Volume of object = Volume of water+ object - volume of water

Volume of object = 27.8 mL - 21.2 mL

Volume of object = 6.6 mL

Density of object:

d = m/v

d = 22.4 g/ 6.6 mL

d = 3.4 g/mL

4 0
3 years ago
Transcription: Describes the production of polypeptides from the mRNA template Occurs in the nucleus Produces single-stranded mR
Tamiku [17]

Answer:

True statements about transcription:

- Occurs in the nucleus  

- Produces single-stranded mRNA using the antisense DNA strand as a template  

- Precedes 5' capping and polyadenylation.

Explanation:

Transcription is the process by which a specific fragment of DNA (e.g., a gene) is used as template to synthesize a complementary RNA sequence, usually a messenger RNA (mRNA) molecule, which is then used to synthesize a protein in the ribosomes by a process called 'translation'. In eukaryotic cells, transcription occurs within the cell nucleus which contains the genetic material of the cell. Transcription factors are proteins that bind to DNA regulatory elements (e.g., promoter sequences) located at the 5′ end of the transcription initiation site and thus stimulate transcription. Both mRNA capping (5' cap) and polyadenylation are post-transcriptional modifications that serve to protect the nascent mRNA from enzymatic degradation and help in ribosome binding during translation.

3 0
3 years ago
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