In 1929 Hubble used light spectra as evidence to indicate the motion of distant galaxies. In the image below show the differences of light spectra of different galaxies compared to a laboratory reference to uses as comparison, or control group. Describe the differences between nearby stars and galaxies compared to distant stars and galaxies by using the spectral lines.

The body is protected against harmful flu viruses by

White-tailed deer are considered to be an overpopulated species in the central united states. which of these events probably contributed the most to white-tailed deer exceeding their carrying capacity?

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.