Question

1. when predator sightings are high, wildebeest numbers in the same area are usually... a. high b. medium c. low d. unchanged 6. which abiotic factor is the strongest driver of wildebeest migration? a. rainfall b. predators c. competition for space d. tourist activity part 3: evidence from research read: scientists studying the serengeti found that wildebeest numbers rise in areas about 2 - 3 weeks after heavy rainfall. grass regrows quickly after rain, and wildebeest follow this pattern closely. predators follow the wildebeest but do not control the timing of migration. 7. based on the passage, when do wildebeest numbers increase in an area? a. before rainfall starts b. at the same time rainfall starts c. after rainfall causes grass to grow d. when predators leave the area 8. what does this evidence suggest about the main cause of migration? a. predators chase wildebeest out of areas b. wildebeest follow rainfall because it grows new grass c. wildebeest avoid areas of high rainfall d. migration has no connection to rainfall

Explanation:

• For question 5, high predator sightings mean more wildebeests are preyed upon, so numbers are low.
• For question 6, the passage indicates rainfall drives grass growth which wildebeests follow, making it the key abiotic factor.
• For question 7, the text states wildebeest numbers rise 2 - 3 weeks after heavy rainfall when grass regrows.
• For question 8, the evidence shows wildebeests follow rainfall - induced grass growth.

Answer:

1. C. Low
2. A. Rainfall
3. C. After rainfall causes grass to grow
4. B. Wildebeest follow rainfall because it grows new grass