Trilobites were abundant in pennsylvania. Trilobites were among the first of the arthropods, a phylum of hard-shelled creatures with multiple body segments and jointed legs. Their fossils first appeared in early cambrian period about 570 million years ago. The trilobite fossils show that during most of this time pennsylvania was providing favorable conditions for the trilobites.
Answers: 1
SAT, 27.06.2019 07:30, turtle12102
Dna is a polymer of which consist of a sugar, a phosphate group, and a a. amino acids; nucleotide b. nucleic acids; nucleotide c. nucleotides; nitrogenous base d. nucleotides; nucleic acid e. proteins; nucleotide
Answers: 2
Trilobites were abundant in pennsylvania. Trilobites were among the first of the arthropods, a phylu...
Chemistry, 11.10.2019 02:30
Business, 11.10.2019 02:30
History, 11.10.2019 02:30
History, 11.10.2019 02:30