The greenhouse effect is caused by

a. co2 traps heat in from from the sun
b. causes the temp of earth to increase
c. all of above
d. none of the above

this protocol provides a detailed procedure for co-immunoprecipitation (co-ip) to identify protein–protein interactions.

this age may represent the age of the earth's accretion, of core formation, or of the material from which the earth formed. this dating is based on evidence from radiometric age-dating of meteorite material and is consistent with the radiometric ages of the oldest-known terrestrial and lunar samples.