Suppose that life is very common on habitable worlds, meaning that life tends to get started on almost any world that has conditions that allow for life (such as surface liquid water). which would then be true about the terms in the drake equation?

a. flife is very close to 1.
b. flife is very close to 0.
c. flife is approximately 0.5.
d. fciv is very close to 1.
e. fciv is very close to 0.
f. fciv is approximately 0.5.

How do you tell if someone actually cares about you? and just say they do?

Mechanical energy is when the amount of kinetic and potential energies added together remains the same. conserved created lost

Hydroelectricity provides about 7 percent of the electricity generated in the united states. (a) explain how a hydroelectric power plant converts energy stored in water into electricity. (b) identify two factors that determine the amount of electricity that can be generated by an individual hydroelectricity power plant. (c) describe the two main types of land-based hydroelectric power plants. (d) describe two economic advantages and two environmental disadvantages of hydroelectricity.