Does radiometric dating always involve carbon Woman blacksex
There is no independent natural clock against which those assumptions can be tested.
For example, the amount of cratering on the moon, based on currently observed cratering rates, would suggest that the moon is quite old.
There are three standard creationist responses: First, creationists assert that current rates (Y) are different than past rates.
It is possible that these rates changed — but under uniformitarianism, which is necessary for science to function, we must assume that rates did not change unless there is evidence for this change.
However, to draw this conclusion we have to assume that the rate of cratering has been the same in the past as it is now.
And there are now good reasons for thinking that it might have been quite intense in the past, in which case the craters do not indicate an old age at all (see below).
The term can also be applied to larger groups of organisms, as in "the adaptive radiation of mammals." adaptive strategies: A mode of coping with competition or environmental conditions on an evolutionary time scale.
Species adapt when succeeding generations emphasize beneficial characteristics.
adaptation: Any heritable characteristic of an organism that improves its ability to survive and reproduce in its environment.
This nucleus contains positively charged protons and electrically neutral neutrons, whereas the surrounding cloud is made up of negatively charged electrons.
When the number of protons in the nucleus equals the number of electrons, the atom is electrically neutral; otherwise it is an ion and has a net positive or negative charge.
The black bar is one ångström, equal to 10 An atom is the smallest particle that comprises a chemical element.
An atom consists of an electron cloud that surrounds a dense nucleus.