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alina1380 [7]
3 years ago
5

Name three reasons (any three) that Pluto was reclassified as a dwarf planet

Biology
1 answer:
ollegr [7]3 years ago
3 0

Answer:

In 2005, Eris, a dwarf planet in the scattered disc which is 27% more massive than Pluto, was discovered. This led the International Astronomical Union (IAU) to define the term "planet" formally in 2006, during their 26th General Assembly. That definition excluded Pluto and reclassified it as a dwarf planet.

Like other Kuiper belt objects, Pluto is primarily made of ice and rock and is relatively small—one-sixth the mass of the Moon and one-third its volume. It has a moderately eccentric and inclined orbit during which it ranges from 30 to 49 astronomical units or AU (4.4–7.4 billion km) from the Sun. This means that Pluto periodically comes closer to the Sun than Neptune, but a stable orbital resonance with Neptune prevents them from colliding. Light from the Sun takes 5.5 hours to reach Pluto at its average distance (39.5 AU).

Pluto has five known moons: Charon (the largest, with a diameter just over half that of Pluto), Styx, Nix, Kerberos, and Hydra. Pluto and Charon are sometimes considered a binary system because the barycenter of their orbits does not lie within either body.

hope it helped

Explanation:

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How does meiosis differ from mitosis
djverab [1.8K]
<span>The processes differ in two fundamental. Meiosis has two rounds of genetic separation and cellular division while mitosis only has one of each. In meiosis homologous chromosomes separate leading to daughter cells that are not genetically identical.
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4 0
3 years ago
Economic importance of tilapia fish
dezoksy [38]

Answer:

Tilapia is one of the most productive and internationally traded food fish in the world. The production of farmed tilapia is among the fastest expanding food sectors in the world. Nile tilapia ( Oreochromis niloticus) is the most cultured freshwater species among the farmed tilapia and contributes about 71% of the world total tilapia production.

Tilapia is one of the most important farmed fish species worldwide (FAO 2018) and an important source of protein (Fitzsimmons 2000;Hai 2015). Due to its sequenced genome (Conte et al. 2017), easy reproduction, efficiency in adapting to diverse diets, high resistance to diseases and handling practices, and high tolerance of a wide variety of husbandry conditions, it is considered an ideal model in toxicological research.

Explanation:

I hope it helps

5 0
2 years ago
If a plant has a high concentration of minerals inside its root cells, but does not have enough energy for active transport, wha
inna [77]

Answer:

The minerals will not be move or transported to other part of the plants because active transport require energy.

Explanation:

Active transport is a process where molecules and ions are move against a concentration gradient by using energy.

This process require energy, for ions or molecules of minerals to be taken up by plants, it is first moved to the root hairs where they are in high concentration against in dilute concentration on soil Active Transport then occur in the roots where it is taken up to the plants with the use of energy.

If there is not enough energy, active transport will not occur and the minerals will remain in the root hair and will not be move to other part of the plant.

8 0
3 years ago
What are two different events that occur during metaphase?​
e-lub [12.9K]

Answer:

The next two major events that take place in mitosis are the alignment of chromosomes at the center of the cell and the subsequent separation of sister chromatids to opposite mitotic spindle poles. These two events occur in metaphase and anaphase, respectively.

Explanation:

7 0
3 years ago
Which of the following is true regarding cultivation and isolation of animal viruses? A. Mouse models are available for virtuall
lesya692 [45]

Answer: D.

Explanation:

Viruses can be cultivated within appropriate hosts, such as a living cell . For example, bacteria are grown in an acceptable growth medium to research bacteriophages; then bacteriophagi are added. Within the bacteria, the bacteriophages replicate and greatly increase their numbers.

Diploid cell lines (or strains) are subcultured approximately 100 times before death. A lot more useful in the laboratory and they can be kept in liquid nitrogen forever. The human embryonic fibroblasts are one example of this kind.

As diploid cell line, developed from human embryos have more accurate results and can be stored for longer period of time, they are widely used in cultivation and isolation of viruses that require human hosts.

Hence, the correct option is D.

7 0
3 years ago
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