The diagram below shows some relationships between ecosystems near the
Sonoran and Chihuahuan Deserts. What happens as elevation increases?

9000 feet
-- 8000 feet
Temperate
Forest
-- 7000 feet
- 6000 feet
Madrean
Woodland
(sporadically
Interior Chaparral)
Semidesert Grassland
- 5000 feet
4000 feet
Thomscrub
3000 feet
2000 feet
Desert
-1000 feet
A. Size of plants decreases
B. Number of cacti increases
O
O
O
O
C. Amount of rainfall increases
D. Soil fertility decreases.

Sally and sue were investigating the topic of friction in science. they used a small car and a ramp as seen in the picture to test what they were learning. they knew that they slipped easily on waxed floors but not on carpet, so they decided to change the material on the surface of the ramp to see what happened. they planned to use glass, carpet, aluminum foil, and sandpaper and run the car down the ramp over each surface. what would be the best research question to guide the girls' experiment? a) does the amount of surface area affect the friction on the moving car? b) will the car travel fastest on the glass surface? c) how does the angle of the ramp affect the speed of the car? d)do rougher surfaces tend to create more friction than smooth surfaces?

Has regulatory areas for thirst, hunger, body temperature, water balance, and blood pressure

Why were the results whit just water so much different than the trials with the detergent ?