Q: 2 Which of the following agricultural practices is LEAST LIKELY to affect the amount of nutrients available to the plants? 1 crop rotation 3 removing weeds 2 adding fertilizer 4 spraying pesticide

Which of the following will not cause mass extinction? a. drastic change is weather b. geological change c. both a and b d. none of the above

When analyzing tree rings, what do scientists assume a thin ring indicates?

Despite the differences in mature plant cells, all of them are derived from meristem cells. the three major types of tissue systems develop from the meristem. meristems develop cells in all but which tissue?