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Dafna11 [192]
3 years ago
15

What are some positive effects humans can have on nitrogen cycle

Biology
1 answer:
inn [45]3 years ago
6 0

Answer:

Scientists have determined that humans are disrupting the nitrogen cycle by altering the amount of nitrogen that is stored in the biosphere. The chief culprit is fossil fuel combustion, which releases nitric oxides into the air that combine with other elements to form smog and acid rain.

Explanation:

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Why what we know about cells is called a theory and not a law
Afina-wow [57]
The term "law" is a historical relic going back to Newtonian times, when after Newton's development of classical mechanics, it was thought that the workings of the universe were directly analagous to a perfectly constructed and perfectly predictable clockwork. That was turned on its head as a result of quantum mechanics, and modern scientists typically avoid use of the term "law" anymore because it is too dogmatic. Newton's "Laws" are still called that mainly for historical reasons now. What used to be called laws are now called theories.
7 0
3 years ago
Cells with a full set of chromosomes are referred to as diploid or 2n, whereas cells with half the chromosomes are haploid or n.
Papessa [141]

Answer:

  • Diploid → Prophase, metaphase, and anaphase
  • Haploid → Telophase

Explanation:

During prophase I,  chromosomes get condensed. Each of the chromosomes gets in pair with its homologous one. They do so to make the crossing-over possible, a stage where they interchange their parts → 2n

During metaphase I, each of the homologous pairs is driven to the equatorial plane, where they randomly line up → 2n

During anaphase I, occurs the independent separation of homologous chromosomes that migrate to opposite poles of the cell. This separation generates different chromosomal combinations in the daughter cells. There are two alternatives per homologous pair → 2n  

In telophase I, half of the chromosomes are already in one of the poles, while the other half is on the other pole. Each group of chromosomes has now half the number of the original cell. The nuclear membrane forms again in each pole → n

Finally, occurs cytokinesis, which involves the invagination of the cell membrane and cytoplasmic division.

The two new cells are ready for meiosis II.

3 0
3 years ago
What is the primary type of macromolecule in the action and myosin that make up muscle cells
Akimi4 [234]

Answer:

I believe it is Protein.

Explanation:

Hope my answer has helped you!

5 0
3 years ago
Children living at high altitudes develop a larger chest cavity by adulthood than children living at lower altitudes. this is an
pickupchik [31]
Children's who live at high altitudes develop a larger chest cavity by adulthood than children who live at lower altitudes. It is an example of developmental adaptations which occurs at the level of the individual during the time of critical life stages.

Mediastinal tumors occur in the chest cavity and it contains the heart, trachea, connective tissue, thymus gland, and large blood vessels which are between the lungs. Chest mass in children and in infants may be secondary tumors.
5 0
3 years ago
Ng living
pashok25 [27]

ig ok i m not sure its genus name is Passer as per how much ik

I m really sorry if its wrong

5 0
2 years ago
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