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natta225 [31]
3 years ago
11

There is a theory that gravity could pull galaxies back together, causing a reverse big bang.

Biology
2 answers:
Rashid [163]3 years ago
8 0

Answer: The expansion of the universe is accelerating.

Explanation: Every millisecond the expansion slowly but surely speeds up.

Ede4ka [16]3 years ago
4 0

Answer:

I would say A: "Background radiation is present.

Explanation:

B, C, and D are proving that the universe is still expanding to this very second, the faster the universe expands the bigger it gets (obviously). Gas giants forming farther away from the Sun, once again, shows that the universe is expanding, and the same thing applies with B.

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8. In chickens, brown feathers are dominant over red feathers. Suppose we cross two heterozygous chickens.
devlian [24]

Answer:

Crossing two chickens heterozygous for the trait feather color, when brown feathers are dominant over red feathers, will produce offspring with brown and red feathers in a brown:red phenotypic ratio of 3:1.

Explanation:

Knowing that in chickens brown feathers are the expression of the dominant allele (B) and the recessive allele is red (b), crossing two heterozygous individuals (Bb) will result in offspring that are likely to have brown or red feathers.

The cross can be represented by a Punnett Square:

<u>Bb X Bb cross </u>

alleles     B    b

B             BB Bb  

b             Bb bb

Where the result is:

<u>Genotypes</u>:  

  • Bb, 50%
  • BB, 25%
  • bb, 25%

<u>Phenotypes</u>:

  • Brown feathers, 75%
  • Red feathers, 25%.

In this case, the probability of having brown or red feathers is 3:1.

3 0
3 years ago
The<br> of the Earth on its axis causes
egoroff_w [7]

Answer:

Earth's tilted axis causes the seasons. Throughout the year, different parts of Earth receive the Sun's most direct rays. So, when the North Pole tilts toward the Sun, it's summer in the Northern Hemisphere. And when the South Pole tilts toward the Sun, it's winter in the Northern Hemisphere

Explanation:

6 0
3 years ago
Read 2 more answers
Which of these statements describes a limitation of the Antarctic Treaty
ZanzabumX [31]

Answer:

<em>The correct option is D) It does nothing to protect the atmosphere over Antarctica.</em>

Explanation:

On December 1, 1959, the Antarctic Treaty was signed in Washington. According to this treaty, Antarctica was to be used for peaceful purposes. This treaty regulates international relations with the Antarctica region. Freedom to different scientists for research in this area was given through this treaty.

However, the treaty did not discuss anything related to the protection of the atmosphere around Antarctica. Hence, option D can be considered to be a limitation of the Antarctic Treaty  System.

5 0
3 years ago
Which of the following statements is correct in a low pressure system?
iren [92.7K]

Answer:

A. is correct

Explanation:

Low-pressure systems are associated with volatile weather conditions like clouds and rain. This is exactly what A says. Hope this helps :)

8 0
3 years ago
Read 2 more answers
Which Kingdom is represented by the following description: All are multicellular organisms, reproduce sexually or asexually, can
natta225 [31]

Answer:

Plants

Explanation:

They are multicellular organisms. In plants there are two types of reproduction :- sexual and asexual. Sexual reproduction happens when androecium and gynoecium both fuses and in asexual reproduction when only androecium or gynoecium is present in a plant. Androecium us a male part off flower and gynoecium is the female part of flower. Plants can't move that we all know and they are autotrophs coz they can make their own food in presence of sunlight, water, air and chlorophyll.....

I hope u will understand it :-) :-)

6 0
3 years ago
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