Which of the following best explains why access to fossil fuels has been important to the development of human society for the past several decades?
Fossil fuels take millions of years to form.
Fossil fuels are formed from organic material.
O Fossil fuels are not evenly distributed.
Fossil fuels can be used as a source of energy.

Can someone me with 3 and 4 plz. this is for masteries test.

If 15 drops of ethanol from a medical dropper weight 0.60g, how many drops does it takes from a dropper to dispense 1.0ml of ethanol? the density of ethanol is 0.80g/ml

In what way do investigations build scientific knowledge? the results of investigations lead to questions that cannot be tested. they reflect the opinions and social values of scientists, ensuring valid information. the results of investigations lead to new questions, which lead to new investigations. they are not influenced by the research of earlier scientists, so they are able to address gaps in understanding.i