In living organisms, complex chemical activities do what to substances? A.
only build them up
B.
only break them down
C.
nothing
D.
build them up and break them down

An organism has the following traits multicellular cant photosynthesize has a skull. wht kingdom does this organism most likely belong too?

What was the purpose of mendel's experiments with dihybrid crosses? a. to determine if dna was a transforming factor b. to determine if traits could be recessive c. to determine if traits affected each other d. to determine if traits had more than one allele

The pressurized plants and fungi mentioned in the video have some surprising similarities. what differences would you expect them to have?