What are mutations? a)changes in nucleotides of a dna molecule that affect the genetic message b)repairs of damage to dna molecules by specialized enzymes c)removal of damaged dna nucleotides by enzyme molecules d)reduction in the rate of replication of dna due to regulatory mechanisms

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 controls activities within a eukaryotic cell?

When is your breathing likely to speed up? a. when your white blood cells increase b. when your cells need more energy c. when your heart cells need more carbon dioxide d. when your blood cells have too much oxygen