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aliya0001 [1]
3 years ago
13

Farming is one example of a human activity that has changed the environment. Which is the NOT a reason farming has hurt the envi

ronment? Question 11 options:
It uses large amounts of fresh water

It destroys habitats of many species

It increased the availability of food for humans

It contributes to soil erosion and desert formation
Chemistry
1 answer:
Levart [38]3 years ago
6 0
It increases availability of food for humans
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Diuris are common orchids found in Australia. The flowers of this species display a large number of variations in color and mark
Strike441 [17]

From what we know, we can confirm that the variations in colors are a mechanism intended to protect the plants from predators.

<h3>Why is color a protection mechanism?</h3>

This can be observed throughout nature. Many poisonous organisms have evolved bright colors intended to be noticed. Over time, this has resulted in many predators avoiding prey with bright colors, in order to avoid the possibility of being poisoned.

Therefore, we can confirm that the variations in colors are likely a mechanism intended to protect the plants from predators.

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3 0
2 years ago
What is the mass of aluminum oxide (101.96 g/mol) produced from 1.74 g of manganese(iv) oxide (86.94 g/mol)?
NemiM [27]

the mass of aluminum oxide (101.96 g/mol) produced from 1.74 g of manganese(iv) oxide (86.94 g/mol) is 1.36g

The reaction is 3 MnO2 + 4 Al ------ 2Al2o3+ Mn

3 mole of manganese oxide give 2 moles of aluminum oxide so by the reaction n( MnO2)/3 =n(al203)2

the formula is n= mass/M so, now substituting values

m (Al2O3)= m(MnO2) X 2 X M (Al2O3) / M(MnO2 X3

so, by substituting values, 2 X101.96 X1.74g / 3 X 86.94 =1.36g

so mass of aluminum oxide obtained = 1.36g

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3 0
2 years ago
A chemist who studies water samples did a demonstration of how to test for lead in water. She added a clear solution of potassiu
faust18 [17]

Answer:

The swirling yellow solid formed is lead iodide (PbI₂).

Explanation:

The reaction of potassium iodide (KI) with lead nitrate (Pb(NO₃)₂) will produce lead iodide (PbI₂) and potassium nitrate (KNO₃) according to the equation:

2KI + Pb(NO₃)₂ → PbI₂↓ + 2KNO₃

Lead iodide (PbI₂) is a yellow swirling precipitate that is formed from the reaction.

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6 0
4 years ago
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What would a biologist see if she examined a small piece of a leaf from a plant and a small piece of a root from the same plant
strojnjashka [21]

Explanation:

What would a biologist see if she examined a small piece of a leaf from a plant and a small piece of a root from the same plant through a microscope? Both the leaf and the root would be made up of cells. The leaf would be made up of cells, but the root would not be made up of cells.

5 0
3 years ago
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How many levels of biological classification are represented in the taxonomic biological name for an organism.
babunello [35]

Answer:

There are two Two level represented in biological name....

Explanation:

There are two level of classification represented in biological name. Genus and specie.....

7 0
3 years ago
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