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Nezavi [6.7K]
3 years ago
12

Which of the following statements is/are true about the physical characteristics of waves? a. wave height is the vertical distan

ce from crest to trough.b. wave steepness is equal to wave height divided by wavelength.c. if the wave steepness ever exceeds a 1 to 7 ratio, then the wave breaks.d. the depth at which orbital motion ceases is called the still water level.
Biology
2 answers:
NemiM [27]3 years ago
8 0

Answer:

Option A, B, C

Explanation:

A wave’s highest part is called crest and the lowest part is called trough. The vertical length between the highest and lowest part of wave i.e crest and trough is called wave height. Hence option A is correct. Steepness of waves is defined as the ratio of height of wave to its length i.e wavelength. Hence option b is correct

And the steepness of wave should never exceed the ratio of \frac{1}{7} , if ration exceeds \frac{1}{7}  the wave gets steep and finally breaks down

 

Hence, Option A, B, C  are correct

velikii [3]3 years ago
8 0

Answer: Option A,B and C.

Explanation:

A wave is a physical phenomenon that is described as disturbance of one or more field that travels through a medium, transporting energy from a location to the other without transporting matter.

Wave height is the vertical distance from crest to trough.

Wave steepness=wave height ÷ wave length.

If a wave steepness ever exceeds a 1 to 7 ratio, the wave breaks

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Worms move using an hydrostatic skeleton. How do worms move?
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Answer:

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Explanation:

The hydroskeleton consists of a fluid-filled cavity, surrounded by muscles. The fluid pressure and the action of the muscles that border it, serve to change the body's shape and produce a movement such as digging or swimming. The successive contraction of various metamers, which are provided with bundles of circular and longitudinal muscle fibers, stretching and thickening parts of the body, allow it to move horizontally. Hydrostatic skeletons have a role in the locomotion of annelids, nematodes and other invertebrates. The hydroskeleton has similarities with the hydrostatic muscles.

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3 years ago
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alukav5142 [94]

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8 0
3 years ago
1. How would the predation of pythons on rabbits affect the population of other large predators such as bobcats and alligators?
Inessa [10]

Q1:

Answer:

Studies have reported that due to predation of pythons on rabbits, the population of other predators is badly affected.

Bobcats are a natural predator of rabbits thus they come in a competition with pythons for food. As pythons are more powerful so they target rabbits more easily than Bobcats. The population of Bobcats has been declined by 90% or more due to the establishment of pythons in the Everglades.

<em>Alligator mississippiensis </em>or American alligators are also abundant in Everglades and just like Bobcats they compete with pythons for their food. They can even kill pythons if pythons are smaller in size than them, but python will kill alligator if he is of smaller size. Although rabbits are food for both alligator and Python but Alligator is a key stone specie and it has very important ecological role, because it digs holes in land that retain water upon rainfall. These water hole provide water in the extreme dry weather and help in survival of other small specie like insects and birds.

So, we can expect the population of Alligator, Bob cats and other small insects and birds to decline rapidly if Python population kept on increasing with same speed.

-------------------------------------------------------------------------------------------------------------

Q2:

Answer:

There is no doubt that Pythons pose serious threat for both humans as well as survival of other organisms like Alligators and birds. However, I donot think that “Python challenge” is a reasonable way to kill or remove Pythons. Because It can threat the lives of many individuals who take part in competition, although they are trained but still they are nor professionals and get training of only few weeks so it is not safe competition.

There should be some strategy of introducing natural predators like Brown beers, Cougars and Alligators which can kill python naturally without staking the life of humans at risk.


Hope it helps!

6 0
3 years ago
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GuDViN [60]

Answer:

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Explanation:

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6 0
3 years ago
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