A group of students are designing a model house that is safe in strong winds. Which house would be the safest? a- A house built out of plastic straws.

b- A house built out of toothpicks.

c- A house built out of linking cubes.

d- A house built out of craft sticks.

Ineed a chemical reaction takes place in which erlergy is released. arrange the reaction's characteristics in order from start to finis lower energy of reactants higher energy of products higher energy of reactants transition state sd lower energy of products

Flock x flock y flock z total pieces of food eaten (from previous page) 147 93 60 food percentage* % % % simulated number of birds in flock for 3rd generation** * divide each flock's total pieces of food by 300, the total number of pieces of food eaten. ** multiply the food percentage for each flock by the total number of birds (30).

The cretaceous period spanned the time interval between and 65 million years ago. 250 million 144 million 75 million 200 million