PLEASE ANSWER FOR BRAINLEST

(ALSO EXPLAIN THE ANSWER)

Oil

Explanation:

150 years ago they used to use coal to produce energy but now we use oil

Hope this helps

PLEASE MARK AS BRAINLISET

in the year 2850, humans successfully colonized mars. the martian modules that were constructed could hold only a small population of people. it is now a century later, and the population on mars has grown to 600 people. of the current mars population, 45 people express the recessive phenotype for phenylketon- uria (pku) syndrome (pp genotype).

explanation:

dont know just give me brainliest