1. In a soil ecosystem, matter _ and energy ___.

Answers

Answer 1

Answer:

Recycled, not recycled

Explanation:

In a soil ecosystem, matter is recycled and energy isn't recycled.

Matter is recycled through biogeochemical cycles. Matter has to be recycled because it can neither be created, nor destroyed, and as such, recycling is the only option left.

Energy isn't recycled because most of the energy gotten is used by organisms, as gotten from the plants already, and thus, when it gets to the food chain there isn't much left to be recycled.

Answer:

B/The second choice

In genetic diseases like Down syndrome, the cause is often due to the presence of an extra chromosome. Do you think this mutation would occur in meiosis or mitosis? Why?

Answers

Answer:

meiosis

Explanation:

Down syndrome is an abnormality that occurs on chromosomes 21, it occurs because chromosomes 21 cannot be separated in meiosis, the pair of chromosomes 21 do not separate and go together to one of the daughter cells. In this way, the oocyte or the resulting sperm will have 24 chromosomes instead of 23. When in conception that oocyte or sperm joins the germ cell of its partner that contributes the 23 chromosomes, the total sum of chromosomes that will have the first cell of the new conceived being will be 47.

Answer:

The mutation observed in the down syndrome occurred as a result of a abnormal and non disjuncted meiosis.

Explanation:

Howbeit, mutation can be described as any heritable change of the base-pair sequence of genetic material.

Down syndrome also described as trisomy 21 is a medical condition caused by a chromosomal excess, whereby the patients bear a certain resemblance to the Mongoloid race, such as a small head and tilted eyelids, and typically have a delay in cognitive ability and physical growth.

Meiosis is one that describes the cell division process of a diploid cell into four haploid cells, which develop to produce gametes.

The chromosomal mutation of nondisjunction in down syndrome describes how a pair of chromosomes is not fully separated during meiosis, resulting in the gamete having an extra chromosame (or none at all).

The Isotope calcium-41 decays Into potassium-41, with a half-life of 1.03 x 105 years. There is a sample of calcium-41 containing 5 x 10⁹ atoms.How many atoms of calcium-41 and potassium-41 will there be after 4.12 x 105 years?
OA 3.125 x 108 atoms of calcium-41 and 4.375 x 10⁹ atoms of potassium-41
OB. 6.25 x 108 atoms of calcium-41 and 4.6875 x 10° atoms of potassium-41
OC. 6.25 x 108 atoms of calcium-41 and 4.375 x 109 atoms of potassium-41
OD. 3.125 x 108 atoms of calcium-41 and 4.6875 x 10° atoms of potassium-41
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Answers

The correct answer for this question will be option D.

Calcium-41 = 3.12× $10^8$ atoms

Potassium-41 = 4.69× $10^9$ atoms

As stated in the question,

Half life of isotope of Ca-14 which decays into K-14 = 1.03 × $10^5$ years

Therefore, after 1.03 × $10^5$ years (1 half life)

Ca-41 will be 50%

and, K-41 will be 50%

After 2.06 × $10^5$ years (2 half lives)

Ca-41 will be 25%

K-41 will be 75%

After 3.09 × $10^5$ years (3 half lives)

Ca-41 will be 12.5%

K-41 will be 87.5%

After 4.12 × $10^5$ years (4 half lives)

Ca-41 will be 6.25%

K-41 will be 93.75%

After 4.12 × $10^5$ years,

Ca-41 = 6.25/100 × 5× $10^9$

= 3.12 × $10^8$ atoms

K-41 = 93.75/100 × 5× $10^9$

= 4.69 × $10^9$ atoms

Therefore, option D is correct.

Learn more about half-lives here:

brainly.com/question/16387602

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Who owns the alcoholic beverage of a private club

Answers

The bartender of the Private Club

Answer:

The bartender of the Private Club

Explanation:

someone said that above me and i believe that is right :)

Please help thanks for the answers

Answers

Answer:

IDK if there is a explanation but if there is i can do so

Question 63 pts
Which of these pieces of evidence would be most important for jurors to consider in the
case of Snoozer v. Early? (3 points)
Dibeast has lunch every week with Ms. Snoozer and trains her birds.
Dibeast saw the birds on Early's property the day the birds went missing.
Dibeast is an animal control officer who often has to capture Ms. Snoozer's birds.
Dibeast witnessed that Early's cat was trained and well behaved.
Question 7
3 pts