The ames in rick park is a very fossil rich unit in pennsylvania. all of the fossils are marine and include brachiopods, crinolds,
hom corals, pelecypods, and gastropods. also fish teeth can be found in the ames. the fossils are formed in limestone of the
pennsylvanian period, 300 million years ago. this fossil record for this time period in pennsylvania indicates that the environment
was a
2
desert
b)
thriving sea
thriving forest
d)
high mountain ranges

An easy way to calculate the amount of energy available at each level is to what?

Neelaredoxin is a 15-kda protein that is a gene product common in anaerobic prokaryotes. it has superoxide-scavenging activity, and it is constitutively expressed. in addition, its expression is not further induced during its exposure to o2 or h2o2 (silva, g., et al. 2001. j. bacteriol. 183: 4413–4420). which of the following statements best describes neelaredoxin synthesis? a-neelaredoxin is produced at all times; levels are constant even when exposed to o2 or h2o2.b-neelaredoxin is produced at all times; exposure to o2 or h2o2 increases expression. c-neelaredoxin is produced at all times; exposure to o2 or h2o2 decreases or prevents expression. d-neelaredoxin is only produced when there is exposure to o2 or h2o2.

Which coal field location is related to coal fields in the eastern united states and supports the theory of continental drift? eastern india southern africa western australia northern south america