Leo does an experiment to determine which laundry detergent removes grass
stains best. the data he collected show that one detergent always removed
100% of a grass stain. leo decides that this is the best detergent to use when
washing clothes with grass stains. what part of the scientific process is leo
performing?
a. forming a hypothesis
o
b. designing an experiment
o
c. stating a problem
od.
d. drawing a conclusion

Apatient is in need of hydration. which type of solution are the patient's cells most likely in?

Click an item in the list or group of pictures at the bottom of the problem and, holding the button down, drag it into the correct position in the answer box. release your mouse button when the item is place. if you change your mind, drag the item to the trashcan. click the trashcan to clear all your answers. label the following topographic map. click on a label below the map to select it, and then click on the appropriate box on the map to place the label. (increments for contour lines is 50 ft).

When does the circulatory system work with the respiratory system? a. during blood cell formation b. during cellular respiration c. during intestinal digestion d. during a viral infection