Question

It is necessary to develop alternative sources of energy because____.

scientists are uncertain of how long the resources will last.
scientists are certain of how long the resources will last.
only a select group of people have information on our resources.
scientists have estimated how long the resources will last.

Answer 1

Answer: A. scientists are uncertain of how long the resources will last.

Step-by-step explanation:

We are looking into many other types such as: Solar, Nuclear, Water, Etc.

Answer 2

scientists are uncertain of how long the resources will last.

Step-by-step explanation:

It is hard to estimate how long certain natural resources will last because they are dependent upon the rate of consumption and other factors. There are many fields of studies going into alternative energy. Since the technology needed for some of these ideas will take time to be developed, alternative sources of energy must be found before the resources we already have run out.