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Oksanka [162]
3 years ago
7

Describe the different forms of energy.

Biology
1 answer:
KatRina [158]3 years ago
7 0

Answer/Explanation: thermal energy, radiant energy, chemical energy, nuclear energy, electrical energy, motion energy, sound energy, elastic energy and gravitational energy.

Hope this helps, Have a great day!! :)

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Much like a ball of yarn is made of strands of strings, this x- shaped structure is made of what?
kari74 [83]

Answer:

The X-shaped structure is made of strands of DNA.

Explanation:

The chromosomes are thread-like structures located in the nucleus of each cell in the body. In a human cell, there are 23 pairs of chromosomes found in the nucleus. Each chromosome is made up of strands of DNA tightly coiled many times around proteins called histones which gives support to its structure.

The chromosomes are X-shaped and are observed only in a cell undergoing division by mitosis or meiosis. Each of these X-shaped chromosomes consists of two identical sister chromatids. The sister chromatids are connected to each other by a region of the chromosome called the centromere. The centromere are located around the depression point of the chromosome which divides the sister chromatids into two regions: long arm called the q arm and a shorter arm called the p arm. During mitosis, spindle fibers attach to this region, and they eventually pull the sister chromatids apart to form two separate chromosomes, one for each daughter cell.

4 0
3 years ago
It is found that many insecticides - used to kill insects - lose their effectiveness after some years. What could be the cause o
Mrac [35]

Answer:

C) The insects develop resistance to the insecticide, which is passed on to successive generations.

Explanation:

It's called adaptation.

4 0
3 years ago
Read 2 more answers
¿Que impacto tiene los diferentes tipos de centrales eléctricas en nuestro medio ambiente?​
Fofino [41]

Answer:

Sin los correspondientes controles y marcos regulatorios, las centrales eléctricas pueden tener efectos adversos sobre el medio ambiente y contaminar los ecosistemas naturales, representando un serio riesgo para la salud humana

Explanation:

Las centrales eléctricas representan un riesgo latente para el medio ambiente, con lo cual ellas deben estar bajo un estricto marco regulatorio y control por parte de las instituciones gubernamentales especializadas para tal fin. Por ejemplo, las centrales hidroeléctricas generan la inundación permanente de grandes áreas (incluso miles de hectáreas) con el objetivo de aumentar la capacidad de generación de energía eléctrica. Por otra parte, se cree que aproximadamente el 50% de la polución industrial se debe a la acción de centrales eléctricas convencionales, las cuales utilizan la combustión del carbón, el petróleo o el gas natural con el objetivo de generar energía eléctrica. Este tipo de centrales eléctricas producen dióxido de carbono (CO2), el principal gas de efecto invernadero y considerablemente deterioran la calidad del aire que respiramos mediante la liberación de partículas contaminantes, presentando efectos adversos tanto para la salud humana como para el medio ambiente. Finalmente, la instalación de centrales eléctricas a base de la energía nuclear no generan gases causantes del efecto invernadero, pero pueden representar un serio riesgo debido a la posibilidad de liberación de materiales radiactivos durante accidentes nucleares, los cuales son capaces de contaminar permanentemente el medio ambiente. En este punto, es importante aclarar que los riesgos de accidentes en centrales nucleares se ha reducido notablemente en las últimas décadas y, por lo tanto, este tipo de centrales eléctricas se consideran relativamente seguras.

5 0
3 years ago
The human body has natural steroids, a type of lipid. What is the function of steroids in the human body? A. They store extra en
zaharov [31]
The correct option is C.
Steroid is a type of hormone. Hormones are chemical molecules that are manufactured and secreted by endocrine glands in the human body for the purpose of carrying chemical messages from one part of the body to another part. Steroid hormones are made from cholesterol and they are soluble in lipids. Examples of steroid hormones are: androgen, progesterone, estrogen, cortisol and aldosterone. 
4 0
3 years ago
Which experiment would most likely contain experimental bias? A. A lab performs a test by giving bacterial colonies the same amo
nalin [4]

Answer:would be A

Explanation:

8 0
4 years ago
Read 2 more answers
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