1.15 A study of a very large number of pregnant women in Arkansas reports that the women gained, on average, 14
pounds during their pregnancy and that 18% of the
women smoked. 20 Which of the following is not a variable
in this study?
(a) Pregnancy status
(b) Smoking status
(c) Weight gain

Grignard reactions are highly exothermic and are performed in ether solvent. there is a real risk of fire during this reaction. in the case that a fire should occur in your distillation apparatus, what is the best course of action? g

When creating a graph, the goes on the x axis and the goes on the y axis. a. dependent variable, independent variable b. experimental group, control group c. independent variable, dependent variable d. control group, experimental group

Amale bird-of-paradise uses a dance to attract mates in which it flaps its tail feathers on the ground and jumps around a potential female mate. a different male bird-of-paradise does a similar dance but it jumps around the female in the opposite direction. the female bird is only attracted to one style of dance, in one direction. this is an example of speciation.