Q: What is the term for a mixture that varies in its composition? Choices: - homogeneous - amorphous - mixed composition - heterogeneous A:
heterogeneous

(Question)
Q: What is it called when the chance that a certain event will occur? Choices: - mutation - difficulty - procession - probability A:
(Answer)
probability

Ques: Q: Homes and transportation use what percent of all energy in the u.s.? Choices: - twenty five - fifteen - forty - half (fifty) A:
Ans: half (fifty)

(Q).
Q: Fossil evidence indicates that the ancestors of humans originated on which continent? Choices: - north america - australia - south america - africa A:
(A).
africa

Ques:Q: What is the ability of an atom to emit charged particles and energy from its nucleus called? Choices: - accumulation - conductivity - power - radioactivity A:

Ans:radioactivity

Ques:Q: Each daughter cell represents one outcome of all possible combinations of maternal and paternal what? Choices: - traits - alleles - genes - chromosomes A:

Ans:
chromosomes