When compare a star of magnitude -1 to a star of magnitude +1, which of the following is true：

a. -1 is 2.5 times brighter than +1

b.-1 is 2.5 times dimmer than +1

c.-1 is 6.25 times brighter than +1

d.-1 is 6.25 times dimmer than +1

El nino is a weather phenomenon caused when warm water from the western pacific ocean flows eastward. part1baan average of 7.7 hurricanes and 3.6 major hurricanes compares to 5 hurricanes and 1.5 major hurricanes from 1995-2005

The scientist can conclude that there is a decrease in the natural resources due to human activities. because of innovation and modernization of the environment, then there goes pollution and other bad effects that destroys the natural resources.

The correct answer is true