When energy changes from one form to another, some energy is always changed to a. added as heat b. returned to its source c. given off as heat d. gained

Which of the following is not a possible effectof increasimg carbon dioxide levels in the atmosphere ?

Which is a genetic engineering advancement directly related to a career in biotechnology? 1) improving solar energy collection 2) transporting textiles at higher rates 3)creating crop foods that resist insect pests 4)repairing historical sites with quality materials

In which squares should the phrase "green pods" appear a) a and d b) b and e c)a,c, and d d)a,b,c,d and e