Soil Degredation and Pollution Flashcards

(40 cards)

1
Q

What refers to the deterioration of soil quality? —-

A

Soil degradation

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2
Q

It occurs when soil loses value, whether in terms of minerals, organic matter, structure, texture, water retention, or volume, in the case of erosion. —-

A

Soil degradation

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3
Q

Healthy soil is about 25% ? and 25% ? —-

A

air ; water

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4
Q

The rest of the healthy soil is made up of minerals and organic matter. And is a home to a complex “soil food web” of 7 biotic factors. What are they? —-

A

microscopic fungi, algae, bacteria, and protozoa, as well as insects, earthworms, and small animals

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5
Q

In soil structure, what are the six soil horizons? —-

A

(OAEBCR) Organic layer, topsoil, eluviation layer, subsoil, parent rock, bedrock

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6
Q

In soil structure, what is the ideal range for lawn maintenance of acidity and alkalinity in soils? —-

A

between 5.5 to 7.0

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7
Q

In the causes, which depletes certain nutrients from the field? —-

A

monocropping under poor farming strategies

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8
Q

In the causes, which negatively affects the earth’s structure and nutrient availability? —-

A

inefficient irrigation under poor farming strategies

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9
Q

In the causes, over reliance on chemical fertilizers and pesticides leads to? —

A

degraded soil health under poor farming strategies

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10
Q

In the causes, practices like deep plowing and heavy tillage weaken soil aggregates and disrupt the structure of the ground. —-

A

aggressive cultivation

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11
Q

In the causes of soil degradation, [two words] can affect soil health and beneficial organisms through nutrient imbalances, environmental pollution, and acidifying the land. —-

A

misusing fertilizers

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12
Q

[blank] causes soil degradation by depleting vegetation cover and increasing ground compaction. —-

A

overgrazing

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13
Q

In the causes of soil degradation, clearing forests for agriculture, logging, or urban expansion destroys the protective vegetative cover of the land. —-

A

deforestation

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14
Q

What can be lost due to water erosion? —-

A

topsoil, organic matter, and nutrients

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15
Q

In the causes, [blank] occurs as a result of overwatering and poor drainage. —-

A

erosion

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16
Q

In the causes, fine particles are blown away by [two words] when drought-stricken fields are left. —-

A

wind erosion

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17
Q

In the causes, [two words] involves land conversion, ground sealing, and infrastructure construction, all of which lead to the loss of fertile soil and land degradation. —-

A

urban expansion

18
Q

In the causes, [four words] can introduce toxic pollutants and heavy metals into the land, making it unfit for agricultural or ecological purposes. —-

A

industrial and mining activities

19
Q

In the causes, [two words] is a threat to human health and the environment, caused by the discharge of toxic pollutants and chemicals through industrial spills, incorrect waste disposal, or agricultural runoff. —-

A

soil contamination

20
Q

Enumerate the nine causes of soil degradation. [clue: Pfp,Ac,Mf,ODE,Ue,I&ma,Sc] —-

A

poor farming practices, Aggressive cultivation, Misusing fertilizers, Overgrazing, Deforestation, Erosion, Urban expansion, Industrial and mining activities, Soil contamination

21
Q

Enumerate the five environmental impacts of soil degradation. [clue: LoB,Se,DF,Cc] —-

A

Loss of biodiversity, species extinction, desertification, flooding, climate change

22
Q

In the environmental impact, what describes as the soil loses its nutrients or becomes polluted, it’s not able to support healthy trees and plants. This devastates the entire ecosystem, and all kinds of life, from soil microbes to birds and animals, no longer have food or a safe place to live? —-

A

Loss of biodiversity

23
Q

In the environmental impact, what is a combination of a loss of habitat and disappearing food sources can threaten the very existence of many species? —-

A

species extinction

24
Q

In the environmental impact, when the soil is so severely degraded that it can no longer support life, it essentially becomes an arid desert. —-

A

desertification

25
In the environmental impact, soil degradation can also lead to [blank], as arid soil is less able to soak up and retain water. ----
floods under flooding
26
In the environmental impact, soils store large amounts of carbon in the form of organic matter. ----
climate change
27
Degraded soil can store 50-75% less [blank] than healthy soil, releasing it into the atmosphere and contributing to climate change. ----
carbon under climate change
28
Enumerate the ways on how people can help prevent soil degradation. ----
apply conservation tillage techniques, practice crop rotation, alternate crops using strip cropping, avoid over-irrigation, apply the right amount of fertilizer, aim for organic farming, plant cover crops, adopt contour farming, practice terrace farming on the slopes
29
[blank] is the introduction of harmful substances or energies into the environment in quantities that disrupt its balance. ----
pollution
30
[blank] is in the air we can't see but breathe everyday. ----
pollution
31
Enumerate the eight types of pollution. ----
air, water, soil, noise, light, thermal, radioactive, plastic
32
_______ pollution is a modern crisis, with billions of tons of plastic waste choking our oceans and landfills. It harms wildlife, enters the food chain, and contributes to soil and water contamination. ----
plastic
33
_______ pollution refers to sudden changes in water temperature. _______ pollution disrupts aquatic ecosystems, reduces oxygen levels in water, and harms marine life. ----
thermal
34
_______ pollution is the excessive or misdirected artificial light that disrupts natural darkness. _______ pollution disrupts wildlife, affects human sleep patterns, and wastes energy. ----
light
35
_______ pollution refers to the degradation of land due to harmful chemicals or waste. This directly impacts agriculture and food safety. ----
soil
36
_______ pollution is one of the most dangerous forms of pollution, _______ contamination occurs when _______ substances are released into the environment. This type of pollution causes severe health issues, including cancer, and contaminates the environment for thousands of years. ----
radioactive
37
_______ pollution reduces crop yields, harms wildlife, and contributes to water pollution when contaminants seep into nearby water bodies. ----
soil
38
_______ pollution affects rivers, lakes, oceans, and groundwater. It occurs when harmful chemicals, waste, or biological contaminants degrade water quality. ----
water
39
_______ pollution is the most visible and deadly form of pollution. It occurs when harmful substances like gases, particulates, and biological molecules are released into the atmosphere. ----
air
40
_______ pollution isn't as visible but its effects are just damaging. It's caused by excessive, unwanted sound in the environment. ----
noise