Air must pass from the back to the front of the pharynx to enter the trachea and food must pass from the front to the back of the esophagus
Answer:
A) he is a human okkkkkkkkkk
B. DNA.
hope this helped!
The answer would be C. Plantae because it has membrane bound organelles and green chloroplasts, as well as containing a nucleus.
Oxygen is an abiotic factor that is beneficial by-product of primary production.
<u>Explanation:</u>
The non living parts of an ecosystem that mainly affects the living organisms in it are called as an abiotic factor. These can include soil, temperature, water, oxygen and sunlight. The major energy source in earth is Oxygen which is abiotic factor.
It is very essential for the photosynthesis process to take place. Here, the plants converts water and carbon dioxide into oxygen and sugar. This becomes food for plants. Then these plants are eaten by animals. Thus oxygen is an important and beneficial by-product of photosynthesis. Oxygen is also very important for the survival of human beings.
