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Answer:

C. Both A and B are correct

Explanation:

Coal is one of the important fuel for the generation of electric energy in the steam generator. Coal is mined from the coal mines and is fed into the steam generator to produce steam that is used to generate electricity.

The mining of coal can affect the environment nearby as it destroys the forest cover or trees nearby. It leads to erosion and water pollution. Also the carbon emission from the burning of the coal releases harmful pollutants inn the atmosphere which causes air pollution.

Thus both options (A) and (B) are correct.

Answer:b

Explanation:

Answer:

A.Valves

Explanation:

The pulmonary vein empties oxygen-rich blood from the lungs into the left atrium. As the atrium contracts, blood flows from your left atrium into your left ventricle through the open mitral valve. When the ventricle is full, the mitral valve shuts. This prevents blood from flowing backward into the atrium while the ventricle contracts.

Except viscosity, all the other factors affect the temperature at which magma forms. Therefore, the correct option is D.

Viscosity can be defined as a measure of the fluid's resistance to flow. Magma can be defined as a very hot molten or semi-molten substance that is formed due to volcanic eruptions. They are responsible for the formation of the igneous rocks.

There are many factors that affect the temperature at which magma forms:

But viscosity does not play any role in impacting the temperature at which magma forms. Therefore, the correct option is D.

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The question is incomplete, but most probably the complete question is,

All the following affect the temperature at which magma forms EXCEPT

A. pressure

B. composition of source material

C. water

D. viscosity

Answer:

Volant adaptation refers to the adaptations done by those animals which have an aerial mode of life or spend most of their time flying. ... -forelimbs modified into wings to help flying. -body covered with feathers. -light weight hollow bones filled with air ( pneumatic bone).

Answer:

This will help you alot in understanding.

Answer:

true

Explanation:

You can germinate cucumber seeds by direct seeding into a garden bed or in the soil in a seed tray.

Answer and Explanation:

At the time of Darwin's travels, the scientific community was beginning to abandon ideas linked to creationism to adopt more scientific and testable concepts, less linked to religiosity. Darwin was very influenced by these new concepts and decided to study a way to apply them to the biological diversity that planet earth presented. He wanted to explain this diversity through scientific data, obtained by experiments and logical reasoning, without the interference of creationist concepts and that would show how life on earth changes over the years and how species of living beings were created. This was one of the kicks that made him start his travels and his studies on biological evolution.

Answer: Nutrient pollution is caused when too many nutrients, primarily nitrogen and phosphorus, are added to water bodies. The excess nutrients act as fertilizers, causing excessive algae  growth. It is common for nutrients to run off the land in urban areas, where lawn and garden fertilizers are used.

Explanation:

I explained in the top-

Hope it helps if it doesn't then whooops

Answer:

good question very good

Answer:

1) Antibodies are secreted into the blood and mucosa, where they bind to and inactivate foreign substances such as pathogens and toxins (neutralization).

2) Antibodies activate the complement system to destroy bacterial cells by lysis (punching holes in the cell wall).

Answer:

Egg.

Explanation:

Technically speaking, dinosaurs were some of the first living creatures on Earth, and they laid eggs long before chickens were around.

Answer:

Hey mate.....

Explanation:

This is ur answer.....

Hope it helps!

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Answer:

C. Both of these are correct.

Explanation:

Whales are the artiodactyls a group of hoofed mammals that includes deer, pigs, giraffes, camels and hippos.

Answer:

You are supposed to find the messed up gene(s) and find out what disorder or disease that messed up gene(s) makes

Explanation:

Answer:

1- C

2-

3- C

4- C

Explanation:

The oceans store more carbon than the atmosphere. Thus, the correct option is C.

An atmosphere may be defined as an area that is surrounded by layers of gases across a planet or other celestial body.

The oceans are a gigantic carbon sink, and the domain of the positive authorization of the greenhouse gas cycle is that, as the oceans become warmer, they tend to discharge more carbon dioxide disbanded in the water.

Therefore, the correct option for this question is C.

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Answer:

The positive effect of the application of a GPS over a compass is that one can get success in getting to his or her desired location. A GPS can inform about the exact location, and when it is combined with a map, it makes the person reach straight to where he or she desires to go

Answer:it’s 4 (an increase in testosterone in males unsung anabolic steroids increases male features

Explanation:

Anabolic steroids can imitate the hormone testosterone is because they both interact with the same cell receptors.

The anabolic steroids interact with same cells receptors as that of testosterone and results in increase of testosterone level causing increase in muscle mass.

Hence, the correct option is 1. anabolic steroids and testosterone both interact with the same cell receptors.

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Answer:

Fitness of the induvitual

Explanation:

Sorry if am wrong

Explanation:

the reason this mouse shows natural selection is that the black mouses are more adapted to their environment compared to the tan mouses as the tan mouses are more easily spotted and eaten by the bird. since the black mouse is more adapted to it's environment it is more likely to live on and pass it's trait of the black fur color to it's offspring while the tan mouses are not.

Answer:

The vas deferens transports mature sperm to the urethra in preparation for ejaculation.

Answer:   testes

Explanation:

Sperms are made in testes.

Answer:

The acquired characteristics are inherited.

Explanation:

Lamarck was a French naturalist and biologist. Lamarck was considered to be the early proponent who occurred the biological evolution. He was will known all over the world as early evolutionists.

Lamarck believed that the living things grow directly in the upward direction from a simple to a more complex form.

In the context, the ideas on the evolution were adopted by the Russian scientist which includes Lysenko. The Russian textbooks printed the assertion of Lysenko assertion that workmen develops a strong muscles those who are working in the mines that would produce strong children.

Bu this assertion, it violated the acquired characteristics that are inherited.

Answer:

Climate change is already happening: temperatures are rising, drought and wildfires are starting to occur more frequently, rainfall patterns are shifting, glaciers and snow are melting and the global mean sea level is rising. These ever-changing trends mean that scientists have to be well acquainted with all this which requires a great deal of understanding and patience.

The political interests in research often limit the results and many a time misleading

Data for climate research is in many instances difficult to access, often at a price, and according to the source and type of data, the formats for retrieval can be very different. In addition, data may not be available for the same time and space scales. There is often an incompatibility between socio-economic and physical data, both necessary for climate modeling efforts because data collection is generally carried out by different agencies for different purposes. This means scientists have to analyze this data as useful and then research on it.

Explanation:

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Explanation:

Proteases

Region of digestive system Enzyme Where produced

Stomach Protease - pepsin Gastric glands in stomach

Small intestine - Duodenum Protease - trypsin Pancreas

Small intestine - Ileum Protease - peptidase Wall of ileum

when there is high concentration of co2 in our body then respiratory centre ( medulla and pons) get activated and it increase rate of respiration which decreases co2 concentration

The apneustic (stimulating) and pnuemotaxic (limiting) centers of the pons work together to control rate of breathing.

Medulla is defined as the lowest part of the brain and the lowest portion of the brainstem. The medulla oblongata is connected by the pons to the midbrain and is continuous posteriorly with the spinal cord, with which it merges at the opening (foramen magnum) at the base of the skull.

The medulla sends signals to the muscles that initiate inspiration and expiration and controls nonrespiratory air movement reflexes, like coughing and sneezing.

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Answer:

increased evaporation.

Explanation:

there is no methane in or near the process of evaporation.

hope this helps

Answer:

B. C-G and A-T

Explanation:

The pairings are adenine and thymine and cytosine and guanine

Answer:

B. C-G and A-T

Explanation:

It is cytosine and guanine, & adenine and thymine. So, option (B) is correct.