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brilliants [131]
4 years ago
5

Although dams serve many important purposes, they can also have a negative impact on the environment by

Biology
1 answer:
NeX [460]4 years ago
5 0

Negative impact on the environment by dams:

We all know that dams are important where there is heavy flow of water. Dams also have negative impact which are numerous and varied. They create impact on biological, chemical and physical properties. When dams are built across the river, fish migrations are affected. They also trap the sediments which affects the physical processes.  

The temperature changes, composition of chemicals and the dissolved oxygen levels are not suitable for aquatic plants and animals. Due to the downstream of riverbed in dams it may affect more than 100 kilometers below a dam.

Thus, we can conclude that construction of dams can affect aquatic species, loss of forest, wetland and farmland and extinction of birds in the floodplains.

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A couple has just learned their neonate is diagnosed with osteogenesis imperfecta, and they
malfutka [58]

Answer:

osteogenesis imperfecta is an inherited genetic disease that mainly affects the bones.  

Explanation:

Osteogenesis imperfecta is an inherited genetic disease associated with alterations in collagen synthesis, which have been shown to increase the risk to suffer bone fractures. This genetic disorder is characterized by different health problems including, among others, fragile bones, reduced skeletal mass, skin hyperlaxity, malformations in the central nervous system, etc. Clinically, osteogenesis imperfecta must be managed by an interdisciplinary medical team, since patients may present a clinical picture ranging from mild to lethal. In the first place, it is imperative to provide health care to avoid fractures, exercises to maintain muscle mass, exercise to improve motor skills, skincare by specialized dermatologists, etc.

5 0
3 years ago
Your friend does not believe in the theory of evolution—specifically because he does not believe that life originated from organ
adelina 88 [10]

Answer:

Answered below

Explanation:

In the 1920s, Russian Chemist A.I Oparan and English geneticist Haldane, first conceived and developed independently, the theory of Primordial soup. The primordial soup theory suggests that life began in a pond or ocean as a result of the combination of the right amounts of chemicals from the atmosphere and some form of energy, under the right conditions, which resulted in the production of amino acids, the building blocks of proteins from which life evolved. This is suggested to have happened 3 to 4 billion years ago.

This theory was tested by Chemist Stanley Miller and Physicist Harold Urey, in 1950. They mixed gases thought to be present in the primitive earth and electrically sparked the mixture, which resulted in the formation of amino acids.

3 0
3 years ago
Marijuana smoke contains some of the same harmful chemicals found in tobacco smoke. true or false
soldier1979 [14.2K]

The answer is TRUE. Research indicates that marijuana smoking exposes the subjected to 75% more benzanthracene than tobacco smoke. Additionally, marijuana smoke has 50% more benzopyrene, 3-5 times higher aromatic amines and nitric oxide than tobacco smoke. Some research also indicate that marijuana smoke has 20 times more ammonia than cigarette smoke.

6 0
4 years ago
An experiment in which only one variable is changed is a(an) __________ experiment.
MrMuchimi

Answer;

D. controlled

An experiment in which only one variable is changed is a controlled experiment.

Explanation;

-A control experiment is an experiment where the researcher only changes one variable at a time in order to isolate the results.

In a controlled experiment, most conditions are constrained so that they do not change. One or two other conditions are then changed and measured by the experimenter. These are known as the independent variables.

For example; An experiment where all subjects involved in the experiment are treated exactly the same except for one deviation.

6 0
4 years ago
Read 2 more answers
The action by which plant roots pull water from the soil and then release some of it into the atmosphere through their leaves is
prohojiy [21]

Answer:

Transpiration.

Explanation:

Transpiration is the answer, because transpiration is a plant’s loss of water, mainly through the stomates of leaves. Stomatal openings are necessary to admit carbon dioxide to the leaf interior and to allow oxygen to escape during photosynthesis, hence transpiration is generally considered to be merely an unavoidable phenomenon that accompanies the real functions of the stomates.

( A brief explanation)

Credits to:

https://www.britannica.com/science/transpiration

8 0
3 years ago
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