Do all cells express all their genetic information at all times? Please explain, I need just the answer, please don't just put something for the points, I will report.

Thank you!

hydrogen is a compound or a single element and a element is a pure substence that cannot be separated into simpler subtances

clorine is a compound its a chemical substance that forms when two or more different elements combine

so both hydrogen and clorine are compounds

he forelimbs below belong to four species that descended in a direct line from the ancestral mammal shown above. of the four descendants shown, which species most likely appeared earliest in evolutionary history?

layer 3 is younger than layer 6.

answer; behavioral neuroscience;