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dimulka [17.4K]
3 years ago
10

Which microscope did Anton van Leeuwenhoek use to observe single-celled organisms

Biology
2 answers:
777dan777 [17]3 years ago
7 0
<span>the microscope that Anton van Leeuwenhoek use to observe single-celled organisms is : a very simple microscope, which is the type of microscope that only has one lens. Anton van leeuwenhoek conducted his studies in the 1600s. During that time period, we haven't developed any type of high-end microscope that exist today</span>
lakkis [162]3 years ago
3 0
A.) Simple microscope 

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professor190 [17]

Answer:

Explanation:

Shortage of nutrients in an ecosstem can harm an organism because when nutrients are scarse or very limited for organism and did not meet up with the organism requirements, there will be reduced metabolism and this can cause malfunction. Shortage of nutrients can lead to decline in growth and can lead to spring up of some diseases in the organism because enough nutrients us not available for good metabolic processes and fight diseases.

For example when an organism is deficient in vitamins and carbohydrates, the organism will not have energy to power metabolic processes and for it's activities and vitamins deficient will make the organism not to have the ability to fight against disease.

Too much of nutrients also affect organisms negatively. When there is much build up of nutrients, it can be harmful to the organisms and restrict metabolic processes.

For example too much of nutriwnts like too much of fat can block blood artieries and veins and thus can lead to inability of blood to flow .

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3 years ago
Compare and contrast the advantages and disadvantages of wind power and geothermal power
aliina [53]

Answer:

An Overview of Geothermal Pros and Cons:

Pros Cons

This energy source is more environmentally friendly than conventional fuel sources.  The largest single disadvantage of geothermal energy is that it is location specific.

A source of renewable energy.  Gases are released into the atmosphere during digging.

The number of exploitable geothermal resources will increase with ongoing research and development in the industry.  Geothermal energy runs the risk of triggering earthquakes.

A sustainable source of energy as its always available unlike wind and solar.  Expensive resource to tap into, with high upfront costs ranging from around $2-$7 million for a plant with a 1 megawatt capacity.

A reliable source as its easier to predict the power output from a geothermal plant with a high degree of accuracy.  Energy fluid needs to be pumped back into the underground reservoirs faster than it is depleted. Management is required to maintain sustainability.

No fuel is required.  

Increase in exploration meaning that new technologies are being created to improve the energy process.  

Pollution levels are much lower compared to fossil fuels.

Explanation:

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3 years ago
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ollegr [7]

Answer:

For growing bacteria it is necessary water, a source of carbon and nitrogen, some inorganic salts.

Explanation:

There are plenty of kind of bacteria, even, all of them need water to dissolved their nutrients and to remove the wastes outside of the bacteria body. The source of carbon could be carbon dioxide for some bacteria that do not need a lot of it. In the other hand, there are other bacteria that are feed based on glucose, fructose or another carbohydrate.

Nitrogen sources normally come from air as gaseous element or some inorganic salts like nitrates.

Other bacteria need specific elements like phosphorous, sulfur, zinc, copper, etc.

Hope this info is useful.

8 0
3 years ago
What is the smallest unit of matter that has characteristic properties of its element?
bazaltina [42]

Answer:

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Explanation:

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