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lawyer [7]
3 years ago
12

What are the positive effects human activities on vegetation?​

Biology
2 answers:
Lina20 [59]3 years ago
5 0

Answer:

Vegetation cover is also significantly impacted by human activities. Changes in land use resulting from human activities such as urbanization and agriculture are important factors influencing the spatial pattern of vegetation.

NeTakaya3 years ago
5 0

Answer:

<em><u>Vegetation plays a vital role in our natural ecosystem and also supports the biosphere in various ways; vegetation helps to regulate the flow of numerous biogeochemical cycles, most importantly those of water, carbon, and nitrogen; it also contributes in the local and global energy balances</u></em><em><u>.</u></em><em><u> </u></em><em><u>With the continuous increase in the population, the negative impact of human activities on the ecological environment is also increasing, such as overgrazing caused by the rapid increase of livestock</u></em><em><u>.</u></em>

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A fish maintains its depth in fresh water by adjusting the air content of porous bone or air sacs to make its average density th
Volgvan

Answer:

0.153

Explanation:

We know the up-thrust on the fish, U = weight of water displaced = weight of fish + weight of air in air sacs.

So ρVg = ρ'V'g + ρ'V"g where ρ = density of water = 1 g/cm³, V = volume of water displaced, g = acceleration due to gravity, ρ'= density of fish = 1.18 g/cm³, V' = initial volume of fish, ρ"= density of air = 0.0012 g/cm³ and V" = volume of expanded air sac.

ρVg = ρ'V'g + ρ"V"g

ρV = ρ'V'g + ρ"V"

Its new body volume = volume of water displaced, V = V' + V"

ρ(V' + V") = ρ'V' + ρ"V"

ρV' + ρV" = ρ'V' + ρ"V"

ρV' - ρ"V'  = ρ'V" - ρV"

(ρ - ρ")V'  = (ρ' - ρ)V"

V'/V" = (ρ - ρ")/(ρ' - ρ)

= (1 g/cm³ - 0.0012 g/cm³)/(1.18 g/cm³ - 1 g/cm³)

= (0.9988 g/cm³ ÷ 0.18 g/cm³)

V'/V" = 5.55

Since V = V' + V"

V' = V - V"

(V - V")/V" = 5.55

V/V" - V"/V" = 5.55

V/V" - 1 = 5.55

V/V" = 5.55 + 1

V/V" = 6.55

V"/V = 1/6.55

V"/V = 0.153

So, the fish must inflate its air sacs to 0.153 of its expanded body volume

5 0
3 years ago
Which of the following is not a physiological characteristic of wheat1?
kompoz [17]

Answer:

<em><u>It is a C4 plant 100% sur</u></em>e

hope i helped

-lvr

3 0
3 years ago
Describe the "folded-fiber" model of the mitotic chromosome.
My name is Ann [436]
The folded-fiber model describes<span> how a chromatin fiber becomes a </span>mitotic chromosome<span>. Ernest DuPraw proposed the </span>folded-fiber model<span> after he had made many observations of metaphase </span>chromosomes<span>.</span>
6 0
3 years ago
When the ball reaches maximum height, its kinetic energy is at <br> a. nextreset?
Anton [14]
Please fix your question, and this belongs in science, not biology. When the ball hits it's maximum height, it's kinetic energy will change to zero, and it will be converted to potential energy.
4 0
3 years ago
These are not in order, Can u please put them In order
Natasha2012 [34]

Answer:

3 / 4 / 5 / 2/ 1

Explanation:

Hope this helps.

6 0
2 years ago
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