Trini adds 10g of baking soda to 100g of vinegar. the mixture begins to bubble. when the bubbling stops, trini finds the mass of the resulting mixture. she determines that the mass is 105g. how do you know that a chemical change has occurred?

What is one way in which a discovery that is made by using cell technology could change existing scientific knowledge? a. a discovery could lead to a change in experimental methods. b. a discovery could lead to a replacement of a scientific theory. c. a discovery could lead to a new brand of cell culture medium. d. a discovery could lead to a new material for culture flasks.

Which statement correctly describes a way that mutations increase the likelihood that a species will survive in a changing environment

Which of these substances does not protect against invaders in the nonspecific immune response? a. saliva b. mucus c. tears d. urine