How does the sea ice in 2019 compare to the sea ice in 2012 during April?

The amount of sea ice in 2019 is considerably less than it was in 2012
The amount of sea ice in 2019 is considerably more than it was in 2012
The amount of sea ice in 2012 and 2019 were very similar
The total amount of sea ice showed a decline

The mRNA strand is complementary to the DNA template strand; however, uracil instead of thymine is paired with adenine.

Protein synthesis which encompasses how gene is used to synthesize proteins consists of two processes namely; transcription and translation.

- Transcription is the process whereby the sequence of a DNA template is used to synthesize a mRNA strand. The mRNA sequence is synthesized using the COMPLEMENTARY BASE PAIRING RULE, which states that Adenine base (A) will always hydrogen pair with Thymine (T) while Guanine (G) will always pair with Cytosine (C).

Thus,This means that the mRNA strand produced is complementary to the DNA template strand that was transcribed. However, Uracil base (U) replaces thymine (T) in the mRNA molecule because Thymine is not found in RNA. Hence, Uracil instead of Thymine pairs with Adenine in the mRNA.

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A catalyst is a chemical substance that speeds up chemical reactions by lowering the activation energy.

The activation energy of a reaction is the amount of energy required to carry out a chemical reaction.

Proteins are biological catalysts that speed up chemical reactions by lowering their activation energy.

In conclusion, a catalyst is a chemical substance that speeds up chemical reactions by lowering the activation energy.

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Answer:

Evidence of every species that ever existed.

Explanation:

Answer:

Your heart may not be strong enough to pump out as much blood as your body needs.

Explanation:

As it tries to move more blood, your heart gets larger. It also pumps faster, and your blood vessels narrow to get more blood out to your body.

1. Nucleotides: A phosphate group, a 5-carbon sugar, and a nitrogenous base are the three components of a nucleotide. Adenine, cytosine, guanine, and thymine are the four nitrogenous bases in DNA. Instead of thymine, uracil is found in RNA. The genetic material of all known living creatures is made up of nucleotides in a chain.

2. Genes:  A gene is a small segment of a lengthy DNA double helix molecule that consists of a linear base pair sequence. A gene is any portion of DNA that contains instructions that allow a cell to generate a specific product – usually a protein, such as an enzyme – that performs a single specified action.

3. A locus (plural loci) is a stable location on a chromosome where a certain gene or genetic marker can be found.

4.  At a genomic region, an allele is one of two or more variations of DNA sequence (a single base or a segment of nucleotides).

5.  Chromosomes are thread-like structures found within the nucleus of both animal and plant cells. Protein and a single molecule of deoxyribonucleic acid make up each chromosome (DNA). DNA is passed along from parents to children and carries the precise instructions that distinguish each living thing.

6.  Karyotype: A karyotype is a individual's entire set of chromosomes. A laboratory-produced representation of a person's chromosomes extracted from an individual cell and arranged in numerical order is also known as a chromosomal map. A karyotype can be used to check for chromosomal number or structural problems.

8. Genotype: An organism's genotype is its genetic makeup. From embryonic development to adulthood, the genotype determines an individual's inherited potentials and limitations. In se×ually reproducing organisms, a person's genotype is made up of the whole set of genes acquired from both parents.

9. Phenotype: Physical traits are described by phenotypes. It encompasses both apparent (such as hair or eye color) and measured characteristics (like height or weight). Characteristics relevant to your development and behavior, such as personality traits, are also referred to as phenotypes.

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Answer:

B. exercising

Explanation:

exercise widens veins and arteries making blood go faster

faster blood means more oxygen to muscles

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In a metapopulation, source populations are species that are likely to have more individuals immigrating to habitat patches than other species. This means that source populations can inhabit the largest suitable ecological patch.

A population may be defined as the members of the same species living in a particular area at a given time.

A metapopulation is a collection of the regional populations within some more extensive area, where migration from one population to another is possible.

Therefore, it leads to inhabiting the largest suitable ecological patch.

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Answer:

The leaf shows the greatest increase

Answer:

Tuberculosis.

Explanation:

it is caused by a bacterium which can attack any part of the body such as the kidney, spine, and brain. not everyone infected with TB becomes sick

During endochondral bone formation, the epiphyses remain cartilaginous until the stage of adulthood.

Endochondral generation is a cellular phenomenon where hyaline cartilage can be replaced with bones.

This phenomenon (endochondral formation) is due to the differentiation of specialized mesenchymal cells to chondrocytes.

Endochondral formation of bones includes:

In conclusion, during endochondral bone formation, the epiphyses remain cartilaginous until the stage of adulthood.

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Answer:

Interspecific competition

Explanation:

This is competition between different species

Intraspecific competition is between the same species

Answer:

The functional units of dna that contain the instructions for making one or more proteins are the "Genes".

The claim could become valid scientifically if it is tested in a controlled setting with repeated results. The correct option is the first option.

A statement without any experimental test is considered a hypothesis in science.

In order for tentative statements to become valid scientific claims, they must be tested experimentally in a controlled setting with the resulting data supporting the claims. The data must also be reproducible by independent researchers.

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Answer: A: If it is tested in a controlled setting with repeated results

Explanation:

I just took the quiz on Edge.

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The genotypes and phenotypes their offsprings can have include only free lobes and attached hair.

This is defined as the genetic constituent of an organism while phenotype represents the physical characteristics.

Dd and Ee when crossed will give DE, De, dE and de which means that the genotype will be 1 homozygous dominant,2 heterozygous and 1 homozygous recessive for free lobes and attached hair.

The probability = number of favorable outcome/ total number of outcome.

The total number of outcome = 4

The probability for 1 homozygous dominant,2 heterozygous and 1 homozygous recessive is therefore 1/4 , 1/2 and 1/4 respectively.

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Answer:

by designing and performing an experiment

Explanation:

Connecting with the consumer in a meaningful way with the unique benefits being included will unlock star potential of the pain reliever.

These consists of means of passing information about an individual or a substance.

Tropical pain reliever should have the unique benefits passed to ensure increase in sales and profit.

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Which of these equation is the correct one for fermentation?

❍ Glucose + oxygen → carbon dioxide + water

❍ Glucose → lactic acid

❍ Glucose → ethanol + carbon dioxide

To understand this first we should know what is fermentation.

What is fermentation?

A process of chemical change in food or drink because of the action of yeast which may cause it to produce bubbles or heat, or turn sugars in it into alcohol.

Equation -:

[tex] \small\sf{C_{6}H_{12}O_{6} \rightarrow2C_{2}H_{5}OH + 2CO_{2}} [/tex]

Which means

Glucose → ethanol + carbon dioxide

Answer:

The Sámi people are an indigenous people of Northern Europe inhabiting Sápmi, which today encompasses northern parts of Sweden, Norway, Finland and the Kola Peninsula of Russia.If this helps mark me brainliest.Thanks.

Explanation:

linking complementary base pairs to the parent strand

Answer:

It has a solid surface that is covered with craters like our Moon.

Explanation:

I hope it helps u dear (^^)

Answer:Jupiter

Explanation:

is the largest of all the planets. It has a radius of 71,492 kilometers at the equator and a radius of 66,854 kilometers at the poles

Answer:

While exercising, the muscles need additional energy as the breathing rate and volume of each breath increase to bring more oxygen into the body and remove the carbon dioxide produced. If insufficient oxygen is available to the muscles, for instance, the exercise is vigorous and/or prolonged, the heart and lungs are unable to supply sufficient oxygen. Muscles begin to respire anaerobically. Lactic acid is produced from glucose, instead of carbon dioxide and water. Muscles continue to contract, but less efficiently. When a period of exercise is over, lactic acid must be removed, because the body's tolerance to lactic acid is limited. These processes require oxygen. This is why, when the period of activity is over, a person’s breathing rate and heart rate do not return to normal straight away.

Explanation:

The molar enthalpy of vaporization of the substance is 84.3 kj/mol.

Molar enthalpy of vaporization is the energy required to vaporize one mole of a liquid at its boiling point.

0.433 moles of the substance absorbs 36.5 kj of energy when it is vaporized.

1 mole of the substance will absorb 36.5 kJ × 1 /0.433mol = 84.3 kj/mol

Therefore, the molar enthalpy of vaporization of the substance is 84.3 kj/mol.

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Plastids that are surrounded by more than two membranes are evidence of: secondary endosymbiosis.

Answer:

this question is asking what an adaptation is or what an adaptive trait is.

Explanation:it has been hypothesized that sympatric speciation of pine beetles may occur through the isolation of populations as a result of increasing dietary ...

Answer:

Constitutive is natural skin color and facultative is the darkening due to UV or other factors.

Explanation:

Constitutive skin color is the natural color of the skin, and that color has nothing to do with any controllable/external factor and is determined in your genes, while Facultative is the result of ultraviolet light or other environmental factors which causes a change in melanin in the skin therefor making it darker  

Aquatic nitrate pollution can result in algal bloom that when the algae die and are decomposed by bacteria, leads to hypoxia and the death of fish.

Algal bloom is a dense spread of algae on the surface of water.

Algal bloom is caused by a process of eutrophication, which is the release of artificial or natural nutrients, mainly phosphates, through detergents, fertilizers, or sewage, to an aquatic system.

Therefore, it can be said that aquatic nitrate pollution can result in algal bloom that when the algae die and are decomposed by bacteria, leads to hypoxia and the death of fish.

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