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finlep [7]
2 years ago
13

A man digging a pit found that he could dig with ease initially but digging became difficult as he went deeper. He could not dig

beyond a depth of 5 feet. Provide a suitable scientific explanation.
Biology
1 answer:
belka [17]2 years ago
5 0

Answer:

The first layers of earth are very loose, unconsolidated layers called soil, which is pretty easy to dig into, but as we go deeper we reach the bedrock, which is the hardest part of the soil profile, which is made of hard rocks and matter.This makes it harder to dig more and more deeper.

Explanation:

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As the peppered moth evolved over time, its wings changed from light to dark so that it could better
solong [7]
So that it could camouflage better.
3 0
3 years ago
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Explain why increased ecosystem diversity contributes to increased biodiversity in the biosphere answer
Alisiya [41]
A diverse set of ecosystems means that there will be a wide variety of selection pressures exerted on the organisms. Therefore, natural selection will act to bring out the best suited traits for that particular ecosystem. The more the ecosystems are diverse, the more will be the difference between the traits between the organisms that will survive. This means that the biodiversity will increase.
3 0
3 years ago
A ship was traveling across the Atlantic Ocean. It traveled 1,300 kilometers at a rate of 90 kilometers per hour. How long did i
yarga [219]
Hello there!

The ship traveled 1300 kilometers in total. But, at rate of 90 kilometers per hour. So what is the rate of the ship for 1300 kilometers.

This is very easy my friend .... all you have to do is this

90 K >>>> 1 hour
1300 k >>>> x ( x represent the hour we are looking for)
Cross multiply
90x = 1300
Divide both sides by 90
90x/90 = 1300/90
x = 14.44 hr

Answer : It take the ship 14.44 hr to travel 1300 kilo
The correct option is D


Good luck and enjoy life!
3 0
3 years ago
Salmon eggs hatch in freshwater streams and, during their first year of life, the young salmon migrate distances up to 1,000 km
Lesechka [4]

Acclimation is the physiological response or phenomenon which is responsible for survival of salmon in fresh water and salt water.

When a young salmon starts its sea journey it travels wide distances in search for oceans completing a leg of their journey. They travel back to home streams for spawning. This survival in different osmotic potentials and salinity is due to osmoregulation and acclimation. System of salmon detects saline change and instigates a negative feedback system to the body water concentration. Similar feedback works contrastingly when salmon is in fresh water or marine streams of water.

Hence, the physiological response occuring in salmon is acclimation.

Learn more about osmoregulation here:

brainly.com/question/11334419

#SPJ4

8 0
2 years ago
The process of primary succession can take hundreds of years.<br> True<br> False
mel-nik [20]

Answer:

False

Explanation:

The process of primary succession can take hundreds, if not thousands, of years. In contrast, the process of secondary succession can reestablish an ecosystem's climax communities in as few as 50 years. The ecosystem's animal populations are also established more quickly during secondary succession.

Hope this helps!

Brain-List?

3 0
2 years ago
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