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Bess [88]
3 years ago
15

In humans, three weeks after conception a structure known as the _____ forms that will continue to develop into the central nerv

ous system.
Biology
1 answer:
Ann [662]3 years ago
8 0

The answer is a neural tube.

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The spontaneous breakdown of the nuclei of unstable atoms to produce new and stable daughter atoms is called _____.
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How does the size of the soil particles impact<br> the soil's permeability (movement of water)?
Usimov [2.4K]

Answer:

Water moves by gravity into the open pore spaces in the soil, and the size of the soil particles and their spacing determines how much water can flow in. Wide pore spacing at the soil surface increases the rate of water infiltration, so coarse soils have a higher infiltration rate than fine soils.

How does soil particle size affect permeability?

But permeability is a different thing. It increases as particle size increases. By definition, permeability is a MEASURE OF EASE with which fluids will flow though a porous rock, soil or sediment. ... That means capillarity increase as particle sizes decreases.

4 0
3 years ago
What is the purpose of spindle fibers during mitosis?
Sonja [21]

Answer:

I think the answer Is divide the cell in half and see the explanation

Explanation:

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6 0
2 years ago
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Rzqust [24]

Answer:

the major difference is that protists are eukaryotes while bacteria and archea are both prokaryotes. this means that prokaryotes do not have a nucleus, and contain circular DNA.

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