A runner travels 2 miles in the first 10 minutes and 3 miles in the next 20 minutes. What is the average speed of the runner in miles per hour? Using the graph, calculate the average speed. What is the average speed of a helicopter that flies 50 km in 20 minutes and then 30 km in 10 minutes? What is the average speed of a lizard that runs 100 meters in 40 seconds and then runs an additional 50 meters in 20 seconds?

oceans

indian ocean

pacific ocean

atlantic ocean

arctic ocean

southern ocean

answer;

c. a tree whose roots are surrounded by wet sand.

explanation;

water stress is an important factor limiting the growth and productivity of forests.water stress is the most often cited cause of poor survival and growth of woody landscape plants.

-insufficient soil moisture is the most common form of water stress, but excess moisture that leads to poor soil aeration (hypoxia) can also result in reduced plant vitality. a tree whose roots are surrounded by wet sand would be least likely to experience water stress.