¿Cuáles son los aspectos más relevantes del informe de Brundtland?

Answers

Answer 1

Answer:

Answer:

los aspectos más relevantes son aquellos destinados a fomentar acciones conjuntas con el objetivo de revertir problemas ambientales y plantear políticas públicas asociadas al desarrollo sostenible en ciertas regiones del planeta

Explanation:

El informe de Brundtland es un documento desarrollado en 1987 con el propósito de abordar el problema del desarrollo económico y social desde una perspectiva medioambiental, planteando así por primera vez el concepto de 'desarrollo sostenible'. El documento analiza con una mirada crítica las políticas de desarrollo económico que se llevan a cabo sin considerar la sustentabilidad medioambiental. El informe lleva el nombre Brundtland en honor a la primera ministra de Noruega durante parte de 1980, Gro Harlem Brundtland. El documento fue revelador para su época ya que visibilizó el problema del desarrollo económico y social en función de la sustentabilidad de nuestro planeta. Un punto importante a tener en cuenta del informe es que a fines de sustentabilidad medioambiental la población mundial no podría seguir creciendo a niveles exponenciales como los observados actualmente o a fines del siglo pasado, prediciendo que este valor se debería estabilizar en un valor entre los 7.700 millones y 14.200 millones de personas.

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The expected ratio of phenotypes among the progeny of a test cross is 1:1:1:1. Out of 200 total resulting progeny, 48 occur in one of the four phenotypic classes. Given this information, which of the following must also be true?1) Since 48 is so close to the expected value, there is no need to calculate chi square before drawing a conclusion about the ratio.2) At least one additional cell must also contain a count of 48.3) The value of observed - expected for this cell = -2.4) The progeny of this cross do not conform to a 1:1:1:1ratio.
In polygenic inheritance, each of the genes controlling a trait will have exactly the same influence over the trait. Group of answer choices Yes since all genes having to do with a trait always have the exact same influence on a trait. No since different genes will exert varying degrees of influence on the trait None of the other responses are satisfactory answers. No since all traits are only controlled by one gene with two alleles.
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Keiko’s teacher was discussing the theory of endosymbiosis. She asked Keiko to mark the organelles in the diagram that most closely resembled prokaryotes. Which organelles should Keiko mark?

Answers

Answer:

The correct answer would be mitochondria or chloroplast.

Endosymbiosis refers to the evolution theory which explains the origin of eukaryotic cells from prokaryotic cells.

It is believed that cell organelles like chloroplast, mitochondria et cetera were free-living early prokaryotic cells which were taken inside the other cells by the process of endosymbiosis. It led to the origin of eukaryotic cells which were able to perform photosynthesis.

Thus, Keiko should mark chloroplast or mitochondria in the diagram.

Answer:

mitochondria, chloroplast

Explanation:

Brown and colleagues studied competition among small rodents in the Chihuahuan Desert near Portal, Arizona. To assess whether interspecific competition had any influence on population size of these rodent species, they conducted a:

Answers

Answer:

The correct answer would be - Species removal experiment and the DeWitt Replacement experiment.

Explanation:

The competition can be increase for the various resources such as habitat, nutrients, water, and many more due to the territorial behavior of interspecific species.

The influence of the interspecific behavior such as competition influences on the population size of the species, two important tests are used are species removal experiment, and DeWitt Replacement exp commonly eriment.

Thus, the correct answer is - Species removal experiment and the DeWitt Replacement experiment.

In peas, the round allele (r) is dominant to the wrinkled allele (r), and tall (t) is dominant to short (t). a pure-breeding round, tall strain is crossed to a wrinkled, short strain, and the f1 plants are crossed back to the wrinkled, short strain. what proportion of the offspring will be wrinkled and tall

Answers

The round allele is dominant (R)
The wrinkled allele is recessive (r)
The tall allele is dominant (T)
The short allele is recessive (t)

The genotype of the f1 generation would be RrTt.So if you cross that back to the wrinkled short then the Punnet of that cross would look like this:

RrTt x rrtt

RT Rt rT rt
rt RrTt Rrtt rrTt rrtt
rt RrTt Rrtt rrTt rrtt
rt RrTt Rrtt rrTt rrtt
rt RrTt Rrtt rrTt rrtt

The genotype for a wrinkled tall should be rrTt at least in this case because neither of the parents are pure-breed.

The proportion would then be then 4/16 or 1/4. There is a 25% chance of yielding a wrinkled tall.

Final answer:

When crossing a heterozygous round, tall F1 pea plant with a homozygous wrinkled, short pea plant, the probability of the offspring being wrinkled and tall is 1/4.

Explanation:

In pea plants, we have two traits where round seed shape (R) is dominant to wrinkled seed shape (r), and tall height (T) is dominant to short height (t). When a homozygous round, tall plant (RRTT) is crossed with a homozygous wrinkled, short plant (rrtt), the resulting F1 generation will all have the genotype RrTt (heterozygous for both traits). If these F1 plants are then crossed back to the wrinkled, short strain (rrtt), we need to look at each trait separately to determine the phenotype ratios.

For the seed shape, the F1 plants (Rr) crossed with the wrinkled, short (rr) can produce offspring with either Rr or rr genotype. Therefore, the probability of having a wrinkled (rr) offspring is 1/2. For height, the F1 plants (Tt) crossed with the wrinkled, short (tt) can also produce offspring with either Tt or tt genotype. The probability of having a tall (Tt) offspring is 1/2 as well. To find the proportion of offspring that are wrinkled and tall, we multiply the probabilities of the independent events: 1/2 (chance of being wrinkled) × 1/2 (chance of being tall) which equals 1/4.

Therefore, the proportion of offspring that will be wrinkled and tall from this cross is 1/4.

Drosophila melanogaster have four pairs of chromosomes.a.what is the ploidy level at metaphase ii of meiosis?

a. 8n

b. 1n

c. 4n

d. 2n

e. 0n

b.what is the ploidy level at prophase of mitosis

Answers

The answer is d. 2n

Drosophila melanogaster have four pairs of chromosomes, so the normal cell would have 4n(four pairs) of chromosome. metaphase is the phase of cell division where the chromosome start to lining up in the middle. In meiosis II, the chromosome is already divided into half, so the total chromosome of the cell would be 2n(half of the 4n)

When wind drips its load of sand, it can form a hill called a

Answers

Depositions of sand are called sand dunes. Hope this helps! :)

It's called a sand dune

Without a plateau extending the refractory period in cardiac muscles sarcomeres might be stimulated so quickly that they would contract and not relax and instead would experience a sustained contraction also called:1) depolarization
2) Tetany
3) relaxation
4) repolarization

Answers

Answer:

Tetany

Explanation

The refractory period in the heart refers to the shortest interval between consecutive contraction conducted impulses out of the cardiac muscle.

It is important because it allows adjustments to stimuli and limits amount of action potential sent per minute.

Without a plateau extending the refractory period in the cardiac muscles.

Sarcomeres might be stimulated to contract instead of relaxing leading to sustained contraction also called Tetany.

Tetany is an involuntary muscle cramp or contraction caused by overly stimulated nerves.

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