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umka21 [38]
4 years ago
8

How do tectonic plates grow and shrink?

Biology
2 answers:
cricket20 [7]4 years ago
4 0

Answer:

The plates slide out of gaps that sometimes create mountains, and they can become volcanoes.

Explanation:

Marizza181 [45]4 years ago
3 0

An expanding earth (growing earth) may also in time be a contracting or shrinking world. If the worlds tectonic plates (sections that make up the continents like Eurasia , Africa and the sea floor etc) can expand then they can also shrink.

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The concentration of ions in the chemical environment surrounding the neurons must be tightly regulated for neurons to function
Artist 52 [7]

Answer:

B) astrocytes

Explanation:

Cells other than neurons that play an important role in the normal functioning of nervous system are called Neuroglia or glial cells.

Satellite cells, astrocytes, schwann cells and oligodendrocytes are all examples of glial cells.

⇒Satellite cells provide protection and nutrition to cells in peripheral nervous system ( peripheral nerves and ganglia).

⇒<em><u>Astrocytes</u></em> play an important role in central nervous system (brain and spinal cord). They provide protection to neurons, scavenge ions, form the blood-brain barrier and also maintain extracellular environment suitable for neuronal functioning.

⇒Schwann cells are found in the peripheral nervous system and myelinate the axons of neurons.

⇒Oligodendrocytes are found in central nervous system and produce myelin sheath which myelinates (insulates) axons  of neurons. Their function is similar to schwann cells but in the central nervous system.

From the above discussion it is clear that the answer is B) Astrocytes as these maintain a suitable chemical environment for the neurons.

3 0
3 years ago
An atom that makes up gold is the same as an atom that makes up silver true of false
Daniel [21]
All of the same atoms make up elements. It's the arrangement of these atoms that really matters. Your answer is true, an atom that makes up gold will indeed be the same atom that makes up silver.

Atoms are just mostly empty space, in fact about 99.99 infinitely percent of an atom is just empty space. We don't actually touch anything, not really. You never make solid contact with an object, but in fact what you're touching is that objects electrostatic field, or otherwise known as it's electron shell. You don't simply pass through an object because like charges repel eachother, the shell and your atoms, which creates the illusion that you're actually touching the object, when in fact your just touching it's invisible electrostatic shell. 

If an atom gains an electron, it will have a NEGATIVE charge. Protons are positive charges, neutrons are neutral charges, electrons are negative charges. Add an electron that out-weighs the net-charge, which is 0, then you'll have an anion, or a negative charge.

The nucleus of an atom is indeed the center of an atom, the most dense area. This carries all of the weight (practically). The nucleus is indeed made up of positive and neutral charges, with an outer shell of negative charges. This is true. 
8 0
4 years ago
In a complex multicellular
Kamila [148]

Answer:

the cell will eventually be replaced

Explanation:

it will be replaced since the specialization of a multi celular organism is that they live longer than the single celled organisms

3 0
3 years ago
Prompt
n200080 [17]

Answer:

The primary purpose of flowers is to give nutrients to other living beings.

Explanation:

I have not taken the lab but I hope my answer helped.

7 0
3 years ago
Read 2 more answers
The relatively slow brain waves of a relaxed, awake state are called:
mel-nik [20]
The answer is Alpha waves
3 0
3 years ago
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