Which of the following substitutions can reduce air pollution?

a.) using a bike instead of a car
b.) using dumps instead of landfills
c.) using coal instead of oil
d.) using fireplaces instead of a wind farms

Which two criteria must be met before scientist can use radiocarbon dating? explain your answer

In which area of the neuron is an action potential initially generated?

Astudent wants to compare the amounts of co2 given off by yeast provided with different amounts of sugar. the student places a balloon over each container to catch the released co2. which observation is a qualitative observation the student can make?