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Brrunno [24]
3 years ago
7

Which of the following is an example of species diversity?

Biology
1 answer:
Vinvika [58]3 years ago
5 0

Answer:

A) bears, skunks, and woodpeckers living in a forest

Duh

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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
28 1/3 minutes to tun 3 1/3 miles
ollegr [7]

Answer:

whats your question tho

3 0
3 years ago
Who was the first man to start classifying organisms
Lunna [17]

Answer:

Explanation:

Organisms were first classified more than 2000 years ago by the Greek philosopher, Aristotle. 1. Aristotle first sorted organisms into two groups – plants and animals.

is the 292nd anniversary of the birth of Carolus Linnaeus, the Swedish botanical taxonomist who was the first person to formulate and adhere to a uniform system for defining and naming the world's plants and animals

8 0
3 years ago
What imaginary line lies in the center of the tropics
Stella [2.4K]
Good Afternoon, 

I believe what you are speaking of may be the following. There is the equator is the center of the earth. Then, their is, on top of the equator, The Tropic of Cancer which passes through Cuba. On the bottom of the Equator, is the Tropic of Capricorn which passes through the Amazon Forest in South America. I hope that i have helped and good luck!

Thank you,
Darian D.
3 0
3 years ago
A few mold spores land on the skin but do not survive due to the lack of moisture and the presence of oxygen. These spores have
maria [59]

Answer:

Physical

Explanation:

The skin is a physical barrier.

Mechanical barriers are made by mucous membranes

5 0
3 years ago
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