71.   But climate change can also have a more indirect effect on an ecosystem, by altering the behavior of predators within it.

72.   But brokers said the change had little effect on the market.

73.   But change has limits.

74.   But change has to be bold to work.

75.   But changes had to be made.

76.   But changes in technology have also improved lives.

77.   But cities that are now benefiting from local assessment of power plants within their borders say the change could have a drastic impact on their finances.

78.   But even some leading proponents of the legislative crackdown acknowledged that the changes will have little direct effect on crime.

79.   But for a consumer who makes just the minimum payment each month, the change in policy has a substantial impact.

80.   But even modest changes can have big effects.