Lee el siguiente texto identifica las palabras en negritas y subrayadas

Ben is interested in using a source that provides original research, current and developing trends and experts within specific fields. which source should he use?

In an ecosystem, marsh snails feed on phytoplankton and painted turtles feed on marsh snails. pollution has resulted in the depletion of phytoplankton. what effect would this situation likely have on the population of marsh snails and painted turtles? as phytoplankton were destroyed, the population of marsh snails would most likely then the population of painted turtles would mostly likely a. 1. increase 2. decrease 3. stay the same b. 1. increase 2. decrease 3. stay the same

Scientists observed a rock stratum with fossil. if mollusks evolved before arthropod, where will their fossils be found.