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pav-90 [236]
4 years ago
14

What is the difference between a stable and unstable element

Biology
2 answers:
ruslelena [56]4 years ago
8 0
Stable elements are those that are unlikely to react with other elements and unstable are those that are highly reactive.
jeka57 [31]4 years ago
5 0
Stable elements are those that are unlikely to react with other elements, and unstable are those that are highly reactive. Stable elements are the noble gases (full outer shell - won't bond with others). The unstable elements should be the ones in Group 1 and Group 7 because they bond together easily since they have a "desire" to fill their outer shell.
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weeeeeb [17]

Answer:

Ratio = 3\times 10^5

Explanation:

Side of a cube, a = 20 µm

a=20\times 10^{-6}\ m

The surface area of a cube, A = 6a² (a is side of the cube)

The volume of a cube, V = a³

The ratio of the surface to volume ratio of the cell will be given by :

R=\dfrac{6a^2}{a^3}\\\\R=\dfrac{6}{a}\\\\R=\dfrac{6}{20\times 10^{-6}}\\\\R=3\times 10^5

So, the ratio of the surface to volume ratio of the cell 3\times 10^5.

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3 years ago
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hammer [34]
It's a ! cnidocytes help in defence and also in capturing prey ! so answer is A !!
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3 years ago
Over the decades local and global ice ages have lowered sea levels. As a result, there is often a decline in marine diversity du
Annette [7]

Answer:

B) Changes in the temperature and salinity of water.

Explanation:

<em>Options</em>:

A) Migration of bottom feeders into the region.

<u>B) Changes in the temperature and salinity of water. </u>

C) Migration of fresh water fish to places near the mouths of rivers.

D) Formation of breeding grounds for various species in the shallow waters.

Sea level changes are among the most relevant issues that our planet is facing due to climate change. This phenomenon impacts the salinity and temperature of the ocean because of the melting of glaciers, and ice sheets. Therefore, <u>melting ice alters the level of salinity of the water which, along with temperature, also effect the density of the ocean water, altering ocean currents and productivity.</u> These impacts alter the distribution, behavior, and ecology of marine organisms.

<em>*Note: The melting of the glaciers and ice sheets - result of anthropogenic climate change - has increased sea level.</em>

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Nadya [2.5K]

Answer:

C

Explanation:

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5 0
3 years ago
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Answer:

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Hope this helps :)

5 0
4 years ago
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