TRUE OR FALSE: Radiometric dating measures the decay of radioactive isotopes present in layers where fossils are found.

Imagine you are the head of a newly formed NASA Interplanetary Paleontology Department! Based on preliminary observations of a nearby planet (listed below), do you expect fossils to be in high or low abundance? Provide three evidence-based arguments to justify your choice, identifying the type of fossil record bias associated with each. Preliminary Observations: Volcanic eruptions and the formation of rift valleys and active subduction zones are regular occurrences on this planet. Algae and many soft-bodied animals are found in the oceans. A few leafy plants and a diversity of insect- and scorpion-like animals dominate the land at low densities. You can make the following assumptions: 1. The planet is of similar age and environmental conditions to Earth 2. Decomposition and other mechanisms relevant for fossilization occur on this planet as they do on Earth 3. Environmental conditions, species diversity, and population abundances in the past remained very similar to what is present now…

1.Compare and contrast (give an account of similarities and differences between two items, referring to both items throughout the answer) a representative species from two similar kingdoms. A T chart or table might be a good way to organize your answers. 2.All life has similar requirements but there is a great diversity in how species meet those requirements. Compare how unicellular and multicellular organisms meet their requirements of life. Think about the requirements for life and how the content from this unit connects

During the Paleozoic, many life forms developed hard parts (shells/bones/etc.).  Why would it be useful for organisms to have hard parts?