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Archy [21]
3 years ago
15

Which substance is a compound?

Biology
2 answers:
bekas [8.4K]3 years ago
8 0
Oxygen is a compound , phosphorus and nitrogen , and reservoirs

Trava [24]3 years ago
7 0

the answer is water A

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How might the soil on a mountain top differ from the soil in a valley below?
r-ruslan [8.4K]
The soil located on top of a mountain differs essentially from lowland soils due to the process of their origin and their morphological and chemical characteristics.
7 0
3 years ago
Group the following into the appropriate range of measurement.
Vesna [10]

Answer:

Hydrogen atom & glucose molecule --- atomic.

Herpesvirus, DNA --- ultramicroscopic.

Protozoan, Rickettsia - microscopic.

Roundworm and algae --- macroscopic

Explanation:

1) Hydrogen atom & glucose molecule --- atomic.

The atomic size level, which interacts with atoms as well as small molecules, is much lower than the ultramicroscopic range.

2) Herpesvirus, DNA --- ultramicroscopic.

Ultramicroscopic particles are very tiny structures that cannot be seen using a conventional optical microscope, necessitating the use of an electron microscope. Viruses and DNA falls into this group since they are much smaller than tiny species like bacteria.

3) Protozoan, Rickettsia - microscopic.

Microscopic species are much smaller than macroscopic organisms because they cannot be observed by the naked human eye and must be viewed through a microscope. The size range for microscopic particles is ( 10^3  \ \ to  \ \ 10^{10}), which contains protozoans and Rickettsia (a gram-negative, non-motile bacteria genus).

4) Roundworm and algae --- macroscopic

Naked eyes can see macroscopic organisms; for example, several types of circular worms and algae can be seen by them.

7 0
2 years ago
What is usually responsible for an earthquake?
Leokris [45]
Movement in the tectonic plates of the earth's crust
6 0
3 years ago
Read 2 more answers
Which of the following structures is NOT a part of the respiratory system?
ValentinkaMS [17]

Answer:

Uvula.

Explanation:

Respiration may be defined as the process of exchange of gases between the body tissue, lungs and the environment. Oxygen is inhaled and carbon dioxide is exhaled out during the process of respiration.

The choanae, external nares, epiglottis and mouth plays an important role in respiration. Uvula is mainly involved in the production of the salivary gland. The uvula moistens the area and also involved in the speech process. Hence, uvula do not play important role in respiration.

Thus, the correct answer is option (b).

8 0
3 years ago
I’m unsure as to what the answer is on #2
Lisa [10]
D. ecosystem to biome
biome would be like a whole desert but an ecosystem would be a small part of that
8 0
3 years ago
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