Which period of time had MORE carbon: pre-industrial or post-industrial revolution?

Blood has traveled from the heart to the toes. which describes the next step of the circulation process?

Acertain species of fish can have either long or short fins. the allele for long fins is dominant over the allele for short fins. a heterozygous, long-finned fish is crossed with a homozygous, short-finned fish. of the offspring, will have long fins and be , and will have short fins and be .

In general, are there any major differences that you can see? explain