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Nitella [24]
3 years ago
14

Alpha Centauri B is a star that is about the same size as the Sun. Why does it appear much smaller and dimmer than the Sun when

seen from Earth? A) It is cooler than the Sun. B) It has less energy than the Sun. C) It is farther away from Earth than the Sun. D) It travels faster around Earth than the Sun.
Biology
2 answers:
lyudmila [28]3 years ago
4 0
C. Although Alpha Centauri B is similar in size to the sun, it is much further away from earth. The sun is 8 minutes away from earth at the speed of light, while Alpha Centauri B and earth is more than 4 light years apart.
REY [17]3 years ago
3 0

Answer:

C) It is farther away from Earth than the Sun.

Explanation:

Alpha Centauri B is a star almost the same size as the sun and with a high energy content, however it is very distant from the earth at a distance of 4.365 ± 0.004 light years, which makes it seen as a small star, not as bright and not as powerful as the sun itself.

The sun, on the other hand, is at a distance of 0.000015692 light years, which means that it is very close and that is why we can perceive its size and luminosity.

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Mitosis can occur in both haploid and diploid cells, but meiosis cannot occur in haploid cells. Why not?.
allochka39001 [22]

Mitosis can occur in both haploid and diploid cells because it is equational division where the number of chromosomes remain the same after division. But meiosis cannot happen in haploid cells because it is reductional division and haploid cells do not have any extra copy of chromosomes to be halved.

Mitosis is the cell division where the number of chromosomes do not change after cell division. It usually happens in the somatic cells of the body. Cancer cells also undergo mitosis

Meiosis is the cell division where the number of chromosomes are halved after cell division. The process of meiosis occurs in two phases: meiosis I and meiosis II. The germ cells of the body undergo meiosis.

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4 0
1 year ago
Which action causes the movement of atmospheric heat from place to place in the troposphere?
kvv77 [185]

Answer:

Cold air is denser than warm air, it will sink below warmer air, pushing warm air upward.

Explanation:

8 0
3 years ago
A plant that is heterozygous for all three traits is crossed with a plant that is short, is heterozygous for seed shape, and is
nikitadnepr [17]

Answer:

1:2:1

Explanation:

If we cross heterozygous for all three trait with a plant  that is homozygous with the greenpods. so:

See attachment:

Conclusion:

The Heterozygous for all three traits will be : 50%

heterozygous for short seed shape: 50%

6 0
3 years ago
Can you tell the difference between electromagnetic and mechanical waves?
mart [117]

Answer:

Electromagnetic waves can travel through a vacuum, that is an empty space, whereas mechanical waves cannot. They need a medium to travel such as water or air. Ripples in a pond are an example of mechanical waves whereas electromagnetic waves include light and radio signals, which can travel through the vacuum of space.

Explanation:

8 0
3 years ago
Coral reefs have the highest biodiversity of any marine ecosystem on Earth. Hundreds of plant and animal species live in close a
Ostrovityanka [42]

Answer:

B.

that the biodiversity of the coral reefs will decrease if global temperatures continue to increase.

Explanation:

Coral reefs are believed by many to have the highest biodiversity of any ecosystem on the planet—even more than a tropical rainforest. Occupying less than one percent of the ocean floor, coral reefs are home to more than twenty-five percent of marine life.

5 0
3 years ago
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