Due

1. what are primary and secondary succession?

2. how do communities change over time?

3. why do successions occur?

4. do ecosystems return to “normal” following a disturbance, such as a natural disturbance or a human-caused disturbance?

Ryan rears sheep for their wool. recently the quantity of wool that ryan gets has diminished. this is because the new sheep are not that wooly. ryan should add which nutrient to their feed so that the sheep becomes more wooly? a.cornb.ironc.cottonseedd. vitamin a

Which type of respiration takes place when there is no oxygen present

What form of anesthetic was used for field surgery