The first chart shows the effect of the normal breakdown of material from reactants to products. the second chart shows the same reaction but with an added modification.
which statement best describes the difference between the charts?
reaction a has an enzyme.
reaction b has an enzyme.
reaction a has an inhibitor.
reaction b has an inhibitor.

Melting glaciers is a serious threat to the environment what is the possible consequence of melting glaciers on polar bears?

1. emigration the movement of people from one place to another 2. immigration a situation in which resources are being used up at a faster rate than they can be replenished 3. migration the leaving of one's homeland to settle in a new place 4. overpopulation the movement of people to a new country 5. sustainable development a situation in which the birth rate is not sufficient to replace the existing population 6. underpopulation the ability to meet current needs without reducing the ability to meet future needs 7. unsustainable development the increase in the population of a city 8. urbanization a situation in which the number of people exceeds the available natural resources in an area

A60-tooth gear is connected to a 72-tooth gear.if the smaller gear turns 12 times,how many turns does the larger gear make?