Of the six kingdoms now recognized, a two are eukaryotes, and four are prokaryotes. b four are plants, and two are animals. c two are prokaryotes, and four are eukaryotes. d four are bacteria, and two are eukarya.

The answer to your question is: letter C. two are prokaryotes and four eukaryotes

Explanation:

A two are eukaryotes, and four are prokaryotes. This answer is wrong because animalia, plantae, fungi and protista are eukaryotes.

B four are plants, and two are animals. This answer is wrong because only one kingdom is plants (plantae).

C two are prokaryotes, and four are eukaryotes. This answer is right there are two prokaryotes (eubacteria and archaebacteria) and the others are eukaryotes.

D four are bacteria, and two are eukarya. This answer is wrong there are only 2 bacteria not 4.

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.

since there are no options posted i'll give you a few examples.

a dolphin's flipper, bird's wing, cat's leg.