4 Which is true for the beginning of the Cenozoic era? *
(1 Point)
Dinosaurs had killed all mammals
Mammals first appeared
Dinosaurs had become extinct
O Mammals and dinosaurs lived together

Many state and local authorities are making laws regarding recreation on lakes, rivers, and oceans to reduce water pollution. why would lawmakers need to consult with scientists before making these laws? a) to make scientists feel important b) so that the laws reduce pollution by a sufficient amount c) so that parks and lakefront facilities will still make large profits d) so that the public will believe that the laws are important to follow

In this case, the statement that people who exercise for an hour may have lower cholesterol levels is .

Arepair man charged $93.06 the price included 2 hours of labor and 40 service charge how much does the repairmen charge per hour for labor?