8. If a farmer plants the same crop in a field year after year, the soil becomes less fertile. What (1 point)
causes this decrease in fertility?
erosion
lack of water
loss of topsoil
loss of nutrients

loss of nutrients

Explanation:

1. Loss of top soil by erosion

2. Nutrient mining

3. Physical degradation of soil (poor structure, compaction, crusting and waterlogging etc.

4. Decrease in organic matter content and soil bioactivity

5. Loss of nutrients through various routes

Modern agriculture had used up the nutrients in our soil and now our food supply was suffering.

several tissues working together form an organ, and several organs together make up an organisms.

the group of cell that carries out special jobs are tissue.