Within each biome how can the environment be organized into levels from complex to simple

1 answer:

5 0

Within each biome, the environment is organized into levels from complex to simple in the following order: ecosystem, community, species, and population. A biome represents a large area defined by abiotic factors. An ecosystem consists of all organisms in an area and their environment. A community is a group of organisms from different species in an area. A population is a group of organisms of the same species in an area.

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A buffer is composed of nh3 and nh4cl. How would this buffer solution control the ph of a solution when a small amount of a stro

Shkiper50 [21]

Answer:

According to Le-chatelier principle, equilibrium will shift towards left to minimize concentration of $OH^{-}$ and keep same equilibrium constant

Explanation:

In this buffer following equilibrium exists -

$NH_{3}(aq.)+H_{2}O(l)\rightleftharpoons NH_{4}^{+}(aq.)+OH^{-}(aq.)$

So, $OH^{-}$ is involved in the above equilibrium.

When a strong base is added to this buffer, then concentration of $OH^{-}$ increases. Hence, according to Le-chatelier principle, above equilibrium will shift towards left to minimize concentration of $OH^{-}$ and keep same equilibrium constant.

Therefore excess amount of $OH^{-}$ combines with $NH_{4}^{+}$ to produce ammonia and water. So, effect of addition of strong base on pH of buffer gets minimized.

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sleet_krkn [62]

Answer:

two moles of water

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Material Conductor or Insulator foam insulator aluminum conductor wool insulator ? conductor Which material BEST completes the c

kirill115 [55]

Sorry but i can not decide i think it is B or C

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A car is traveling at 15kph and speeds up to 30kph in 5 seconds. What is its acceleration?

Wewaii [24]

Answer:

the acceleration is 3 k/h/s

Explanation:

The formula for acceleration is Δv/t, so change in velocity divided by time.

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The correct answer is D. A solid has a high to very high melting point, great hardness , and poor electrical conduction, this is a covalent network solid. This is because of the large amount of energy required to break these bonds, the said properties are exhibited by these solids.

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