The mass of an atom is contained primarily in its nucleus. The correct answer in regards to the given question is option "B". The nucleus is actually a dense compact region that is mostly made up of protons and neutrons and it takes the central position of an atom.
Ernest Rutherford discovered the nucleus of an atom in the
year 1911.The maximum weight of an atom is present in the nucleus and the
remaining small amount of weight is taken up by the electrons surrounding the
nucleus.
The process during which hydrosphere interacts with the exosphere is during the condensation of water vapor into water.
<h3>Hydrosphere and Exosphere</h3>
hydrosphere is the total amount of water on a planet. The hydrosphere includes water that is on the surface of the planet, underground, and in the air while exosphere is the outermost layer of Earth's atmosphere which is the upper limit of the atmosphere and extends from the exobase, which is located at the top of the thermosphere.
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Landfill is a carefully designed structure built into or on top of the ground in which trash is isolated from the surrounding environment (such as rain and air ). This isolation is accomplished with a bottom liner and everyday it is covering with soil.
Answer:
D. toxins
Explanation:
<u>Toxins are not microorganisms</u>, in fact they are non-living substances/chemicals which can cause infection in our body. Toxins may be produced by microorganisms but they are themselves not microorganisms. Some of the examples of toxins produced by microorganisms are botulinum toxin A, tetanus toxin A, muscarine etc.
Other options can refer to potentially infectious type of microorganisms. Option A. talks about microbes, among microbes some are pathogenic. Option B. talks about pathogenic, as the name indicates will be infectious for sure.
Option C. talks about nonpathogenic, it may be non pathogenic at a time but later on it can be pathogenic. For example: some vaccines use inactivated microbes which are non pathogenic for generating antibodies in the body but later on in the human body when they get optimum conditions for growth they can turn pathogenic and start infecting our body.
