Answer:
a
Explanation:
Remember, a biotic factors are those that are living (having life in them), while the abiotic factors are not living organisms.
Oxygen is in the category of biotic and it interacts with the atmosphere (space) which is abiotic.
Answer:
Chloroplast
Explanation:
Chloroplasts are the site of photosynthesis, where in the prescence of light glucose is formed from carbon dioxide and water.
Answer:
B
Explanation:
organ system is two or more organs working together to perform a specialized function.
