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Dmitry_Shevchenko [17]
2 years ago
15

Pls help me on this question.

Biology
1 answer:
BARSIC [14]2 years ago
3 0

Answer:

Its b

Explanation:

Electromagnetic waves are categorized according to their frequency f or, equivalently, according to their wavelength λ = c/f. Visible light has a wavelength range from ~400 nm to ~700 nm. Red light has a wavelength of ~700 nm, and a frequency of ~4.3*1014 Hz.

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Match each energy source with the correct description
Andru [333]

wood- renewable resource that can be burned

oil- spills can destroy aquatic ecosystems

hydroelectric power- uses the kinetic energy of water

nuclear power- creates radioactive waste

coal- burning releases CO2 into the air

8 0
3 years ago
When microbial action during decomposition in aquatic ecosystems removes too much oxygen, the body of water experiences .
pashok25 [27]

The body of water experiences eutrophication.  

The process of eutrophication takes place primarily in ecosystems with gradual changing waters, mainly in deep lakes. In the depths of the lake, where deposition of dead algae takes place, the aerobic bacteria, which feeds on them proliferate that in turn consumes more amount of oxygen.  

Though in the absence of enough circulation of water that is usually found in the case of deep lakes, the bottom of the lake is poorly oxygenated and the bacteria eventually deplete the oxygen found in the deep layers of water. Thus, they can no longer degrade all the dead organic matter and gets accumulated in the sediments. The lake is now considered to be aging.  


3 0
3 years ago
The zygote is said to be Choose... , because it is able to develop into any kind of cell in the body. Adult stem cells are refer
Sindrei [870]

Answer:

The correct answer is -

1. totipotent

2 multipotent

3. pluripotent

Explanation:

The cells that are able to develop or differentiate a different kind of cells in the body of the individual are known as totipotent cells and this ability is known as totipotency. An example of such cells is found in the zygote.

Multipotent on the other hand are the cells that are able to develop into a specific kind of cell of tissues these cells are present and the example of this type of cell is adult stem cells. Whereas Embryonic stem cells are Pluripotent cells that are characterized as the cells that develop into any type of cell of the body of an organism.

6 0
3 years ago
Multicellular organisms are made up of different types of differentiated cells. Given that all cells in an organism
andrew11 [14]

Answer:

There are histones in the nucleus that DNA coils around. The part of the DNA that is coiled around the histones is not accessible, and cannot be expressed in that cell. DNA that is not wrapped around a histone can be transcribed.

Explanation:

6 0
3 years ago
Which discovery in the 1800s lead to the development of germ theory
bogdanovich [222]

<u>Answer:</u>

Discovery of vaccine for smallpox, viruses and actual organisms that cause many diseases lead to the development of Germ Theory.

<u>Explanation:</u>

  • Theory was the 'predominant theory' of 'disease transmission' before germ theory but it is no longer accepted as a 'scientific theory' of diseases.
  • 'Formal and reliable experiments' on germs and diseases relationship were 'conducted by Louis Pasteur'.
  • He showed that growth of microorganisms was not a spontaneous generation and his pasteurization experiment provided key pieces of evidence that supported germ theory.
8 0
3 years ago
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