What is formed when two substances are in the same container, but no chemical reaction occurs?
A. An atom
B. A mixture
C. A compound
O D. A molecule

Kate is studying the transformation from unicellular to multicellular organisms. which metaphor is the most appropriate to apply to the map of the timeline.

Attached earlobes are a reccesive trait in humans. in the tree below, people with attached earlobes are shaded in. which best describes labeled x in the tree? a: a female with one recessive allele b: a female with no recessive allelesc: a male with no recessive allelesd: a male with one recessive allele

Which best describes somatic mutations