Question

The graph below shows the winter precipitation in Arizona from 1995 to 2002. It also shows the survival rates of Arizona pronghorn fawns for the same period.
Which two years had the most precipitation?

• Which two years had the best survival rates for fawns?
• Using your knowledge of biotic and abiotic factors and information from the graph, give two reasons why precipitation and fawn population are linked.
• Predict what would happen to the fawn population if the precipitation rate continues to go downward in 2003.

Answer 1

1998 and 2001 had the most precipitation


1998 and 2001 had the best survival rates for fawns


1) plants require water to grow, fawns feed of plants
2) they need water to drink


If it keeps going down we will no longer have fawns in the future

Answer 2

Answer:

* 1998 and 2001 had the most precipitation.

* The best years for survival were 1998 and 2001.

* One reason would be that precipitation rates are connected to plants as well. Fawns are herbivores, meaning they eat plants, so if the plants are well nourished by rain and growing, fawns will have plenty to eat. Sorry that I don’t know the second reason the two factors are connected.

* Fawns would most likely go extinct if the precipitation rate continues to go down.

Step-by-step explanation: