True or False? A change in temperature from -13 degrees to 13 degrees results in a final value of zero

Determine the number of girls in a math class with 87 boys if there are 25 girls for every 75 boys

When you answer this can you explain

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