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dem82 [27]
3 years ago
12

MN

Biology
1 answer:
Elodia [21]3 years ago
4 0

Answer:

O silicon (Si)

Explanation:

-Valence electrons are electrons of the outermost shell which can participate in chemical bonding. ... -As in silicon, four electrons are present in the outermost shell, so silicon has Four valence electrons.

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Please Brefly describe how vaccines work and they help our immune system?
Jlenok [28]

Answer:

vaccines have the smallest amount off the grid they are for in them so that you body can attack and get used that virus so that when you get it you are as bad

Explanation:

I think

5 0
3 years ago
Which of the following statements about aldosterone is NOT correct?
Olin [163]

Answer:

C. Aldosterone increases sodium reabsorption by increasing the number of Na+-K+ ATPase pumps in the luminal membrane of the proximal tubule.

Explanation:

  • Aldosterone hormone is produced by the adrenal gland and mainly carries out its functions in the kidney.Through the aldosterone hormone the body is able to retain more water for the kidney is able to hold more sodium.
  • When the plasma sodium levels decrease and the plasma potassium levels increase the production of aldosterone hormone is stimulated for sodium is needed in the .body to maintain the high water levels in the body.
8 0
3 years ago
Zirconium has an atomic number of 40 and an atomic mass of 91. How many neutrons does it have?
Natali [406]
Subtract the atomic number from the atomic mass to get the neutrons 
7 0
3 years ago
Astronomers studying the planet of Rhombus have detected sedimentary rock on its surface. One astronomer wonders if material in
Gwar [14]
Answer:
igneous rock CAN become sedimentary rock through a process called ROCK CYCLE.
Explanation:
Rocks can be defined as solid structures of minerals that are formed naturally over a period of time. They are grouped into three main types which includes the following:
- igneous rock
- sedimentary rocks and
- metamorphic rocks.
Rocks are capable of transforming from one type to another through a process known as rock cycle. There are two forces that brings about this process which includes:
- The internal force : this is the Earth’s internal heat engine, which moves material around in the core and the mantle and leads to slow but significant changes within the crust.
- The external force: this is the the hydrological cycle, which is the movement of water, ice, and air at the surface, and is powered by the sun.
Molten magma cools to form either extrusive igneous rock or intrusive igneous rock. With time they undergo weathering, eroded, transported, and then deposited as sediments which are being compressed and cemented into SEDIMENTARY ROCKS. Again through the above mentioned forces, different kinds of rocks are either uplifted, to be re-eroded, or buried deeper within the crust where they are heated up, squeezed, and changed into METAMORPHIC ROCK.
Therefore the material in this sedimentary rock found in Rhombus planet used to be in igneous rock deep in Rhombus's interior due to continuous rock cycling on the planet. I hope this helps
8 0
3 years ago
Read 2 more answers
Genotypes made of the same alleles
Kitty [74]

Explanation:

Depends if the parent is Heterozygous or Homozygous.

It would be the same alleles if the parent was Homozygous and it would be different if the parent was Heterozygous.

5 0
3 years ago
Read 2 more answers
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