Karis studied for 30 minutes for her first test. She had her cell phone on as usual and checked her cell phone several times during the 30 minutes. She made an F
on the test and her mom took her cell phone away. Poor Karis. The second test,
she again studied for 30 minutes but did not have her cell phone at all. She made
an A. Her mother was so happy, she gave Karis her phone back. Karis studied for
her third test for 30 minutes. She had her cell phone with her again. Karis made a
D on her test.
1. What is the control group?
2. What is the experimental group?
3. What is the independent variable?
4. What is the dependent variable?
5. What were the constants?

increase soil erosion                                             reduce soil erosion

cattle grazing                                                         hydroseeding

deforestation                                                         contour plowing

                                                                                planting vegetation

plant roots basically hold the top soil

together and stop soil erosion because

in such situation top soil is not removed

during flood but cattle grazing causes

soil erosion because cattle consume the

grasses and herbs and top soil is exposed.

same situation occurs because of

deforestation, the trees and plants are cut

down to expose top soil which causes soil

erosion

can i have a list of the items?