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denpristay [2]
3 years ago
9

Un cilindro metálico de 80 kg, 2.0 m de longitud y un área de 25 cm? en cada base. Si una de sus bases está en contacto con el p

iso ¿Qué presión ejerce el cilindro sobre el suelo?
Biology
1 answer:
Feliz [49]3 years ago
5 0
English? Maybe hold up ima use a translation
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Compare the solar radiation received in the Tropics with that of the Earth's Polar Regions. What is the difference?
Mariulka [41]

Answer:

The regions near the topic receive more sunlight compared to those of the equator.

4 0
2 years ago
A method used by horticulturalists when they rotate the use of fields—planting crops on a particular piece of land for a period
svetoff [14.1K]

Answer:

The correct answer will be- Crop rotation

Explanation:

When the growth of a type of crop which uses soil nutrients in abundance and then growing another crop in the same filed led to the decrease in the production of the next crop.

Thus farmers adapted to avoid such farming practices and developed a new practice which allowed the land to become fertile again so that the growth of next crop will not be affected.

The practice involved the planting of a crop on a piece of land then leaving the soil ploughed and unsown for a longer period of time and growing corp on another piece of land allowing the time to restore the nutrient content. This practice is known as "crop rotation".

Thus, crop rotation is the correct answer.

8 0
3 years ago
A student proposes that left-handedness is a recessive trait and is hidden in much of the human population. a survey of his clas
djverab [1.8K]

The frequency of the recessive allele for the left handle will be in this case equal to q^2 = 0.25 >> q = 0.5.

<h3>What is the Hardy Weinberg principle?</h3>

The Hardy Weinberg principle is a model used in population genetics to estimate genotypic and allele frequencies.

The Hardy Weinberg principle states that the sum of the dominant allele and the recessive allele in a population is equal to 1 (p + q = 1).

This principle also states p2 + q2 + 2pq = 1, where p^2 is the dominant homo-zygous allele, 2pq the heterozygous frequency and  q^2 the recessive homo-zygous frequency.

In this case, 9 individuals represent 25% (q^2 = 0.25), thereby the feecuency of q is equal to √0.25 = 0.5.

Learn more about the HW principle here:

brainly.com/question/1365714

6 0
2 years ago
After which event could you say with most certainty that evolution has occurred
slamgirl [31]
Reinassans. people left their nobles and started to become independant. this lead to buissens,trade,exporlation and discovery.    sorry about my spelling.
7 0
3 years ago
The outer layer of the kidney is the select one:
Svetlanka [38]
The renal cortex is the outer portion of the kidney between the renal capsule and the renal medulla.
8 0
3 years ago
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