Arrange the rock layers from oldest to youngest . Re-examine The rock outcrops if you need to. Record the order in the student guide. CONGLOMERATE,

LIMESTONE WITH CRINOID,

SANDSTONE WITH TRILOBITE,

SHALE WITH AMMONITE.​

The concept of keystone species is controversial among ecologists because most organisms are highly interdependent. if each of the trophic levels is dependant on all others how can we say one is most important

Research cheetahs on the internet what has contributed to this animal becoming "endangered" or "threatened." what animal you have chosen? -cheetah how long has the animal been endangered or threatened? what has contributed to this animal’s endangered or threatened status? why is it important to save this animal from extinction? after researching and gathering facts, write a 350-word letter from the point of view of an animal rights' activist. be sure to include at least five facts that you learned from your research.

Which characteristics are typical of a human population in the postindustrial stage?