Each hereditary trait corresponds to

a sequence of nitrogen bases
a step on the ladder
an arrangement of nucleotides
an enzyme

Which statements describe resources? one of the factors people use when deciding where they will live is the availability of resources. renewable resources have little value for people. resources are unevenly distributed throughout the world. energy is the world resource which has the highest use. the use of nonrenewable resources has decreased in recent history. the use of resources is evenly distributed throughout the world. the world's oil supply will last for the next forty years if its use continues as expected.

What blood vessels carry blood to the heart? away from the heart?

Approximately how many times does an average human heart beat in a lifetime?