Indoor air pollution has increased as improvements have been made in . A)
heating and air-conditioning systems
B)
radon-resistant construction techniques
C)
energy conservation in the home
D)
green building construction
E)
all of these choices contribute to indoor air pollution

What molecules will be best used to compare different species with the exact same sequence of amino acids? why would two species have the same protein even if the molecules in question is different? (hint: transcription to translation to protein).

Aparent with freckles is crossed with a parent without freckles. the punnett square shows the possible genotypes and phenotypes of the offspring. which statement accurately describes the probability of phenotypes? a. the offspring are more likely to have freckles. b. the offspring are more likely to have no freckles. c. the likelihood of the offspring having freckles and not having freckles is the same. d. the likelihood of the offspring having freckles and not having freckles cannot be determined.

Describe your dna model. which part do the straws represent? the pushpins? the paper clips and the black dots you made with the marker?