No machine can achieve 100% efficiency in terms of work output. in any mechanical system, what is considered the most common cause for some of the work being turned into thermal energy?

What are the fixed alleles in the human species? o a. the alleles that are on the most chromosomes b. the alleles that change most often 000 c. the alleles that no one has d. the alleles that everyone has

How many chromosomes does each human cell contain? a. 23 chromosomes b. 26 chromosomes c. 43 chromosomes d. 46 chromosomes

Stem cells found adult tissue such as in bone marrow brain muscle skin and liver are only capable of what