Answer:
This question lacks options, options are: a. Keystone species b. Dominant species c. Competitor species d. Omnivore species e. Mutualistic species. The correct answer is a.
Explanation:
The most connected species from a trophic point of view in an ecosystem are keystone species, since their elimination has great effects on the stability and persistence of the network. The Keystone species are those species that play a crucial role in the structure and dynamics of a certain ecosystem and that, in the event of their disappearance, would be seriously unbalanced. These species are responsible for the physical structure of the habitats of many other species, and they play an important role in the succession processes of ecosystems. Elephants play an important role in maintaining the structure and balance of ecosystems in these communities, therefore they are keystone species.
The pharynx would need to come first in order for C to be correct.
B is also incorrect. Air flows through the bronchioles, then the
alveoli, and finally into or out of the capillaries where gas exchange
can occur with cells.
A is the only option that correctly describes the path of air through the respiratory system in the correct sequence.
The complete flow of air would be:
Nose>pharynx>trachea>bronchi>bronchioles>alveoli>gas
exchange with cells and then back out.
When their concentration increases it is called bio accumulation
16. Science is the study of the natural world by gathering information and data but technology needs science to create devices, ie. (phones, tablets, laptops).
17. Life and Earth.
18. A scientific law is the description of an observed phenomenon, and, the explanation of the phenomenon is therefore called the scientific theory.
19. 1.) ask questions.
2.) do a background research.
3.) create a hypothesis
4.) test your hypothesis with experiments and etc..
5.) review your data and create a conclusion.
6.) talk about your results, (what, why, how).
Good luck!
