The effect of copper sulfate on the mucus cells in the gill filaments of a certain species of fish was investigated. We wish to know if expo- sure for 24 hours to copper sulfate reduces the number of mucus cells in this species. The number of mucus cells per square mm in the gill filaments of both untreated fish and exposed fish were as followUntreated Exposed 10 14 16 14 18For each of the following problems, state the appropriate null hypothesis and the alternative hy- pothesis, conduct the appropriate test, and state a conclusion. Reject the H0 if p  0.05. Be sure to in- clude the p-value. Assume the variable in question to be approximately normally distributed unless in- structed otherwise.

answer: group b.

step-by-step explanation:

large crystals result from very slow cooling.

evaporation of water: this would produce an evaporite which is a sedimentary rock. like a salt pan in a desert. not possible to have volcanic rocks originate this way.

crystalization in molten earth: slow cooling over time. (hundreds to millions of years)

crystalization at earth's surface: this results in fast cooling. (a few hours to a few months or years)

crystalization from cooling off hot water: that would be a hydrothermal deposit. while associated with volcanics they are not volcanic rocks themselves and usually occur fairly rapidly.

the answer is 6

hope this !

answer: 3 x 2 = 6 and 6+0

step-by-step explanation: sum equals addition and twice is multiplication so its

3 x 2 = 6

6+0= 6

identity property of zero