Vertebrate fossils are present in the Chengjiang formation of China, dated to the Cambrian explosion. The detailed vertebrate fossils show that the earliest members of this lineage lived in the ocean about years ago.

Lola needs to sign 6 invitations. using stopwatch that measures time to tenths of a second, it takes lola 5.3 seconds to sign her full name. going by the accuracy of the stopwatch, which is the most accurate determination for the number of minutes lola needs to sign all 96 invitations

The negative impacts of nonnative species generally outweigh the positive impacts

Which is not a type of symmetry? a. asymmetryb. radial symmetryc. bilateral symmetryd. lateral symmetry