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2 years ago

How would technology affect the population growth rate?

Chemistry

2 answers:

Rasek [7]2 years ago

8 0

B. It would lead to rapid population increase with high birth rates and low death rates due to the medical advancements

nexus9112 [7]2 years ago

6 0

Answer:

B. It would lead to rapid population increase with high birthrates and lower death rates.

Explanation:

Technology will increase birth rate and decrease death rate. Advancement in medical care allows better prenatal care, facilitates intensive care for children born with critical diseases, improved medications and baby food is also critical in saving the life of babies born. Also several vaccinations are available to prevent children from succumbing to life threatening diseases. In vitro fertilization is facilitating birth rates.

Additionally, better healthcare facilities are available at old age such as stem cell therapy, early diagnosis of cancer, treatment for Alzheimer’s and more.

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The thin outer layer of Earth, called the crust, contains only 0.50 percent of Earth's total mass and yet is the source of almos

Rzqust [24]

Answer:

The mass of silicon in kilograms in Earth's crust is $7.2729\times 10^{21} kg$ .

Explanation:

Mass of Earth = $5.9\times 10^{21} tons$

(1 ton= 2000 lb)

(1 lb =453.6 g)

1 ton = 2000 × 453.6 g =907,200 g

Mass of Earth = $5.9\times 10^{21}\times 907,200 g=5.3524\times 10^{27} g$

Percentage of earth crust = 0.50%

Mass of earth crust = M

$0.50\%=\frac{M}{5.3524\times 10^{27}}\times 100$

$M=2.6762\times 10^{25} g$

Percentage of the silicon in Earth's crust = 27.2 %

Mass of silicon in in Earth's crust = m

$Si\%=\frac{m}{M}\times 100$

$27.2\%=\frac{m}{2.6762\times 10^{25} g}\times 100$

$m = 7.2792\times 10^{24} g=7.2729\times 10^{21} kg$

1000 g = 1 kg

The mass of silicon in kilograms in Earth's crust is $7.2729\times 10^{21} kg$ .

7 0

3 years ago

A more reactive metal displaces a less reactive metal from salt solution. Such reactions are called:

motikmotik

Answer:

Displacement Reaction.

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3 years ago

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If an object has more positive charges than negative charges, the object has an overall?

guapka [62]

It will have an overall positive charge.

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2 years ago

Quizletwhat does the mucosa of the small intestine release in response to the acidic chyme?

Ivenika [448]

Reducing acidity of chyme :Acidic chyme entering the duodenum stimulates the release of secretin from the small intestinal glands.

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1 year ago

Which trait is most likely a result of artificial selection

ycow [4]

Answer:

Explanation:Artificial selection is distinct from natural selection in that it describes selection applied by humans in order to produce genetic change. When artificial selection is imposed, the trait or traits being selected are known, whereas with natural selection they have to be inferred. In most circumstances and unless otherwise qualified, directional selection is applied, i.e., only high-scoring individuals are favored for a quantitative trait. Artificial selection is the basic method of genetic improvement programs for crop plants or livestock (see Selective Breeding). It is also used as a tool in the laboratory to investigate the genetic properties of a trait in a species or population, for example, the magnitude of genetic variance or heritability, the possible duration of and limits to selection, and the correlations among traits, including with fitness.

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3 years ago