Question

year after year xavier raises a vegetable garden in the same plot of soil he observed that the plants grow less abundantly from one year to the next and they produce fewer vegetables which processes could help explain xaviers observation

Answer 1

Answer:

the rate at which soil bacteria perform nitrogen fixation

Explanation:

Plants cannot use nitrogen in the air directly as nitrogen present in the air cannot react with other compounds. Nitrogen present in the air is converted into ammonia so that the plants can utilize it. The nitrogen-fixing bacteria convert the atmospheric nitrogen into ammonia.

When the same crop is grown again and again on a soil, the resources become depleted in the soil. Also, the number of nitrogen-fixing bacteria decreases.

Hence, it is essential to practice crop rotation.