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marusya05 [52]
2 years ago
9

The invention of the electron microscope opened up many doors for biologist’

Biology
1 answer:
Dovator [93]2 years ago
8 0

The invention of the electron microscope opened up many doors for biologists as it helped them to view and learn the appearance of cells and their sub-cellular structures

<h3>What is an electron microscope?</h3>

Electron microscope are microscopes which helps biologists to view the appearances of cells of organisms which cannot be seen with our nak -ed eyes.

Generally, electron microscopes:

  • Uses a beam of accelerated electrons as its source of illumination
  • Helps in obtaining high resolution images of biological and non-biological specimens.
  • It is also used in biomedical research

In conclusion, electron microscope helps biologists to view, learn and to also understand the appearance of cells and their sub-cellular structures

Learn more about electron microscope:

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Which of these factors is associated with sustainable farming?
s344n2d4d5 [400]

Answer:

The answer is D. Food security

Explanation:

Sustainable Agriculture:

Sustainable agriculture or farming is a combination of agricultural policies, practices and measures that yield the maximum profits and benefits without negatively impacting the environment.

Sustainable agriculture, as an idea, basically means to utilizes resources responsibly so that the future generations can reap the benefits as well.

Sustainable Farming Approaches:

Approaches to sustainable farming include policy as well as farming technique interventions. Some of these methods are:

  • Crop rotations that involve planting diverse crops on a piece of land, as opposed to monoculture and intensive farming that gradually makes the soil nutrient deficient.
  • Cover cropping after a season of monoculture to prevent leaving the soil bare til the next season.
  • Use of renewable energy resources and integrated pet management to generate energy efficiently and minimize crop losses respectively.

Food Security:

Food security entails that healthy, nutritious and safe food is readily i.e. physically and economically available for all people. Food security is one of the major sustainability goals.

3 0
3 years ago
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A bumblebee buzzes past you at 3 m/s. The frequency of the hum made by its wings is 152 Hz. Assume the speed of sound to be 342
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Explanation:

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3 0
3 years ago
Question 1
noname [10]
1 - A ground level plant develops curling tendrils that wrap around other objects so it can "climb".

This is a species changing over time as it was originally a ground level plant but began to climb higher.

2 - Over many generations.

This is because diversity takes time and has to be integrated through generations; for instance, marriage. In a family, it becomes more diverse after the next generation as each generation is likely to marry someone of another ethnicity and allow the family tree to become more diverse.

3 - Mutate or Survive

It depends on what it means by mutate - develop a mutation to make it adaptable? If that's the case, then mutations within the DNA would be a result of adaptation and increase survival. Otherwise, survive is the obvious answer as adaption allows for species to move around and live longer.

Hope this helps!
4 0
3 years ago
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Heartworms can infest the hearts of animals like cats and dogs. The worms get nutrients from the animal, while the animal will d
tester [92]

Parasitism

Explanation:

This relationship in which the heartworms gets nutrient from the host and in the process, the host eventually dies from infestation is known as parasitism.

  • The organism that houses the heartworm is called the host
  • The heartworm in itself is called the parasite.
  • Parasitism is a positive - negative relationship in which one organism feeds on the other and causes harm to it in the process.
  • Plasmodium falciparum is the parasite of malaria in man.
  • In commensalism, one organism depends on the other without causing harm to it. Example is cattle and egret.
  • Mutualism is a positive - positive relationship in which both organism derives benefits from the other. Example is lichen.

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6 0
3 years ago
Which one is an accurate description of the process of erosion?
zloy xaker [14]
<span>The correct option is C. Erosion is the process by which the earth surface get worn down. It involves the removal of soil, rocks or dissolved material from one location and its transportation to another location. Erosion can be caused by water, wind and glacier.</span>
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