A study showe a correlation between the number of umbrellas sold at a local store and the number of days of inside recess at the nearest school. Which lurking variable would explain the correlation between the number of umbrellas sold and the number of days of inside recess?

In what organelle does photosynthesis take place?

Hii1977 cleaner shrimp are a species of shrimp that clean parasites from other organisms. fish allow the shrimp to eat the parasites in their mouth. the shrimp get a source of nutrition. the relationship between the shrimp and the fish is this association indicates that for the smaill aneser arecommensal,mutualistic,or parasitic for the begger one the anser are the shrimp and fish benefit each other , the shrimp harm the fish, or the fish do not benetit from the shrimp

3x + 4y = 5 x- 3y = -7 solve by substitution