Two students make a model of a tree house they want to build. The scale is 1:42. In the scale model, the tree house
door is 3 cm tall.
How tall should the real tree house door be?
A. 45 cm
B. 14 cm
C. 39 cm
O D. 126 cm

Which of the following is a question of morality? a.) delierately reporting false data b.) accidentally reporting false data c.) kepping a sloppy record of experimental observation d.) condition a drug experiment which will harm a lab rats

Which geologic feature would most likely be represented by contour lines john far apart from one another? a cliff a hill a plain a valley

Which statement is the best summary of the model? a-a series of aerobic and anaerobic reactions take place in cells b- the sun's energy moves through trophic levels in a food chain c-light energy is converted into stored chemical energy plants.d- food molecules are broken down in the cells if living things.