Me
which type can form directly from the other rock types listed ?
a)igneous
b)sedimentary
c)metamorphic

How many trophic levels are there in the following food chain? phytoplankton - shrimp - perch - pike - osprey

The table shows dates and appearance of index fossils. which rock layers can be dated most precisely? a) a layer containing both a fossil 4 and a fossil 3 b) a layer containing both a fossil 2 and a fossil 3 c) a layer containing both a fossil 1 and a fossil 4 d) a layer containing both a fossil 1 and a fossil 2

Each pair of clay balls represents two planetesimals. if each planetesimal is composed of the same material and is separated he the same distance, which pair experiences the frayed gravitational attraction?