Frog eggs are usually attached to vegetation or rocks near the surface of a pond. Tadpoles can use essentially all areas of a shallow pond, or the top few feet of a deeper pond or lake. Adult frogs can live on land or in the water. A frog's life would be least likely to be disrupted by a change in the

For a change in the environment that surrounds them.

Explanation:

Frogs and toads are amphibians that have the ability to live in both environments, that is why their respiratory system is highly adapted to extreme situations such as sudden climate changes, among others.

This modification of the environment many species would not tolerate because generally species always develop, live and reproduce in a single environment, such as humans, which is only in the terrestrial environment.

It is very difficult for frogs not to be able to adapt or survive climate change since they have the ability to adapt their respiratory system to two totally different media such as water and air.

A frog's life would be least likely to be disrupted by a change in the bottom or benthic zone

Explanation:

In aquatic environments, it occurs a predictable variation in temperature, light, salinity, nutrients, oxygen, and other factors that might limit the distribution of living beings. The water body might be divided into vertical and horizontal strata according to these factors.      

The euphotic zone corresponds to the area where occurs photosynthesis, while the aphotic zone corresponds to the depths where light does not reach, and photosynthesis does not occur.

The shallow area near the shore is called littoral, characterized by the presence of many plant species. Frog eggs are usually attached to vegetation or rocks in these shallow areas, where vegetation is abundant and there is plenty of light.

Beyond the littoral, there are open areas known as limnetic photic areas, limited in depth by the light penetrance. In relation to light penetrance, photosynthesis might be performed up to 50-100 meters, the máximum depth of active photosynthetic radiation penetrance. The deep zone is under the limnetic zone and is the point where respiration equilibrates with photosynthesis. Tadpoles can use both areas, especially the limnetic area.

Adults make use of the three areas: the littoral shallow areas, the limentic zone and the deep zone, which they might use while searching for food or scaping from predators.    

The third deepest stratum is the benthic zone, near the bottom and characterized by being poorly lighted and a decomposition place.  Also, the available oxygen is very low. There is a high anaerobic bacterial activity of decomposition.  Frogs (or any other vertebrate) would not be able to live in these areas, mainly because of the oxygen lack.

A change in this stratum, or in the bottom, would hardly cause any disruption to the frogs lifes.

why many students visually perceive stem as a vapid class?

for many students, however, stem subjects are optically discerned as vapid, tedious, and destitute of authentic-world applications. science and math have always been a major part of the high school curriculum, but many students have disengaged from these subjects because they don’t optically discern that they have any pertinence to the authentic world or students’ daily lives. for them, math and science have become a set of rules, procedures, laws, theorems, and formulas to memorize. some students even develop math apprehensiveness and cerebrate they are incapable of learning higher-level mathematics.

why is stem paramount?

as the u.s. economy changes, the ordinant dictation for stem-capable workers is growing. in may of 2014, the u.s. bureau of labor statistics counted more than 8.3 million stem jobs, which accounted for 6.2 percent of total employment in the cumulated states. that number is expected to perpetuate to increment as u.s. companies grow and innovate to compete in the ecumenical economy. according to the u.s. department of labor, the average salary for all stem jobs is $85,570, which is virtually double the average salary for all jobs.

many people still envision stem professionals as wearing a white lab coat and conducting research in a laboratory. in authenticity, some of the most in-demand stem fields are petroleum engineering, process engineering, and computer engineering. these fields that are experiencing shortages of qualified candidates are additionally among the highest paying, with the average petroleum engineer earning an annual salary of $147,520 in may 2014 according to the u.s. bureau of labor statistics.

in additament, stem subjects edify students valuable skills that are vital for prosperity in all vocations, even those that do not directly require stem erudition. engagement in stem subjects avails students develop quandary-solving, critical mentally conceiving, and leadership skills. these skills are so ecumenical, in fact, that statistics relinquished in the summer of 2013 by the u.s. census bureau designated that about three-quarters of the people with a bachelor’s degree in stem fields are not working in those vocations. many non-stem employers are poaching stem-qualified job candidates because they are more ingenious and collaborative than their non-stem counterparts.

as the ecumenical economy perpetuates to evolve, the desideratum for stem-capable workers will perpetuate to grow. by getting edifiers and students involved in the stem kineticism, an incipient generation of adroit workers will be poised to energize and expand this exhilarating field.

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