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harkovskaia [24]
3 years ago
15

Choose all the answers that apply. Which of the following are physical changes? souring boiling freezing rusting melting

Biology
2 answers:
mina [271]3 years ago
7 0

Answer:

the person that is on top is correct

Colt1911 [192]3 years ago
5 0

Answer:

What are the 5 types of physical changes?

Types of physical changes include boiling, clouding, dissolution, freezing, freeze-drying, frost, liquefaction, melting, smoke and vaporization.

Boiling Liquids. ...

Clouding and Condensation. ...

Dissolution or Dissolving. ...

Freezing or Solidification. ...

Freeze-drying . ...

Frost Formation. ...

Liquefaction Changes.

Types of physical changes include boiling, clouding, dissolution, freezing, freeze-drying, frost, liquefaction, melting, smoke and vaporization.

Explanation:  SO THE ANSWER IS melting point, boiling point

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What are some differences between multi-celled organisms and single-celled organisms?
pantera1 [17]

A Multi-Celled organism has many cells (more than one). Examples would be plants, humans and animals/mammals.

A Single-Celled organism only has one cell that makes up it's entire self. Examples would be bacteria and archaea.

8 0
3 years ago
Los métodos hormonales son eficientes porque: * A: impiden la entrada de los espermatozoides C: Se inhibe (no se desarrolla) la
timofeeve [1]

Answer: C: Se inhibe (no se desarrolla) la ovulación.

Explanation:

Los métodos anticonceptivos se utilizan prevenir el embarazo no deseado, evitando que el esperma fertilice a un óvulo. Hay distintos tipos, los cuales se clasifican en:

  • Anticonceptivos hormonales: Contienen hormonas, tales como estrógeno y progesterona, que previenen la ovulación (es decir, la liberación de óvulos de los ovarios). De esta manera, al no haber óvulo disponible, por mas que hayan espermatozoides, no va a ocurrir ninguna fecundación. El método mas conocido es la píldora o pastilla anticonceptiva.
  • Anticonceptivos de barrera: Proveen una barrera física que impide la fecundación al impedir el encuentro entre el óvulo y el espermatozoide. Por ejemplo, el uso de preservativos o condones. En estos métodos, se impide la entrada de los espermatozoides, no se encuentran con el óvulo y la esperma queda atrapada dentro del condón.
  • Anticonceptivos permanentes: Proveen un método permanente como  por ejemplo el Dispositivo Intrauterino que se coloca en el tracto uterino con una vida media de meses o años y posee un efecto espermicida que mata a los espermatozoides (por lo que no lograrán encontrar un óvulo). Otro ejemplo es la vasectomía, la cual es una cirugía que corta los conductos deferentes que transportan a los espermatozoides por lo que ya no pueden salir de los testículos para producir la fecundación (quedan atrapados dentro de los testículos, no entran al tracto uterino y no encuentran al óvulo)

Tanto los métodos de barrera como los permanentes, no inhiben la ovulación aunque si impiden que el óvulo se encuentre con el espermatozoide. <u>Entonces, los métodos hormonales son los únicos que logran inhibir la ovulación</u>. Las píldoras que poseen las hormonas previamente mencionadas pero fabricadas sintéticamente. Las mismas mimetizan el efecto de las hormonas naturales producidas por el cuerpo, alterando el ciclo menstrual regular y así evitan el embarazo ya que no habrá óvulo disponible para fecundar. Además, también pueden alterarla mucosidad en el cuello del útero para que los espermatozoides no pueden atravesarlo y llegar al óvulo. De todas maneras, el objetivo principal y mas importante de los métodos hormonales es bloquear la ovulación.

6 0
3 years ago
Which viral genome is likely to require an RNA-dependent RNA polymerase for transciption upon viral entry?
Inga [223]

Answer:

(-) sense single-stranded RNA

Explanation:

Negative sense refers to viruses that use the negative sense single stranded RNA as their genetic material.

It is essential for the negative viral strand is complimentary to the mRNA so it is converted to a positive RNA by RNA polymerase.  

Negative sense single stranded RNA virus require an RNA dependent RNA polymerase for transcription.  This is because it essential in encoding proteins by catalyzing the complimentary RNA strand to the given RNA tempelate.  

6 0
3 years ago
Using what you learned about ecological interactions think of an example of each interaction in which humans are involved
PSYCHO15rus [73]

a. Competition: Humans compete with all organisms for space.

b. Parasitism: Humans have many parasites: head lice, ticks, tapeworms, etc.

c. Mutualism: We have mutualistic relationships with all domesticated plants/animals.

d. Commensalism: Pigeons thrive in metropolitan ecosystems without really

affecting humans (except for being mildly disgusting).

8 0
3 years ago
How are the blue whale and adelie penguin alike as consumers
dybincka [34]
They both eat zooplankton I think
5 0
4 years ago
Read 2 more answers
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