The ozone layer is important because it protects life from damaging ultraviolet radiation. how did early life create the ozone layer?
a) water molecules on the earth were broken to release ozone.
b) volcanoes released the carbon dioxide needed to make ozone.
c) early bacteria and plants released the oxygen needed to make ozone.
d) early bacteria and plants released the carbon dioxide needed to make ozone.

If the frequency of the p allele is .63 in the population then what is the frequency of the q allele?

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.

Which of the following types of rock would most likely contain a fossil? slate granite lava rock limestone