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ivanzaharov [21]
3 years ago
7

What are the two methods used together to demonstrate the Earth is at least 3.8 billion years old? List and briefly describe the

methods.
Biology
1 answer:
Veronika [31]3 years ago
6 0

Answer:

Likewise, scientists use radiometric dating to determine the ages of moon rocks, obtained by astronauts. Taken together, these methods give results that suggest an age for our Earth, meteorites, the moon – and by inference our entire solar system – of 4.5 to 4.6 billion years old.

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Irish Setters are type of dog. In Irish Setters, the allele for red coat color (R) is dominant over the allele for brown coat
GREYUIT [131]

Answer:

2 Rr, 2 rr. (2:2 ratio)

Explanation:

The offspring will be Rr Rr and rr rr.

Since the red coated parent is heterozygous the recessive gene will have more of a chance to show when bred with the recessive brown Irish Setter.

<em>Hope this is correct. Have a great day.</em>

7 0
2 years ago
Meiosis reduces chromosome number and rearranges genetic information. Explain how the reduction and rearrangement are accomplish
Alisiya [41]

Answer:

Explanation:

Meiosis is a form of cell division that occurs in the sex cells of organisms. It ensures the reduction of a diploid cell to an haploid cell to allow for the formation of a diploid zygote after fertilization (contribution of both parents haploid sex cells to give a diploid zygote). Thus, this process is very essential and important.

The reduction is accomplished by 2 divisions after the duplication of chromosomes

- first division: separation of homologous pairs of chromosomes (this reduces the total in half)

- second division: separation of sister chromatids of a chromosome.

The rearrangement in meiosis occurs by crossing over/genetic recombination.

This is the exchange of genetic material between homologous pairs of chromosome bringing about a rearrangement and genetic variation

An example of a chromosomal abnormality that arises as a result of defects in this process is the Down Syndrome which is caused by a nondisjunction of the chromosomes 21 pair in a sex cell.

This condition produces offsprings that have some characteristic facial features, short stature etc

6 0
3 years ago
Which of these methods of waste management is most likely to release
Paul [167]

Answer: Incinerator will be ur answer

5 0
2 years ago
Fungal endophytes are symbiotic fungi found to be beneficial for cacao trees against pathogenic attacks. Imagine having two caca
Neporo4naja [7]

Given what we know, we can confirm that the tree with the fungi will be more likely to survive.

<h3>Why would this tree survive over the other one?</h3>

This has to do with the benefit from the symbiotic relationship established with the fungi. In exchange for nutrients to live, the fungi offer the tree protection from pathogens such as the one it is being injected with.

Therefore, we can confirm that the tree with the fungi will be more likely to survive.

To learn more about symbiotic relationships visit:

brainly.com/question/26741757?referrer=searchResults

3 0
2 years ago
The colloid osmotic pressure of the blood is related to the plasma concentration of _______.
Firlakuza [10]
Hello, this is related to the plans concentration of proteins.
Please help me by hitting thanks and brainliest, thanks.
4 0
3 years ago
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