In some years, weather patterns have caused there to be few fish in local lakes, and anglers have gone elsewhere. Also, invasive carp are threatening the lakes and may someday cause fish stocks to drop indefinitely. How should these facts impact Dave and Betsy’s planning?

the answer u all are looking for is 4000000000000000000000 million years.

not always but somethings can be reproduced in a laboratory.

other quantities, called derived quantities, are defined in terms of the seven base quantities via a system of quantity equations. the si derived unitsfor these derived quantities are obtained from these equations and the seven si base units.