The deepest parts of the ocean are hostile to life. A barren stretch of sea floor recently experienced an earthquake that opened up a hydrothermal vent. This vent provides heat and nutrients. Over time, the area became filled with various deep-sea life forms. What kind of ecological activity is this?

Which of the following statements is true? a. the main cause for speciation is an increase in gene flow. b. organisms that reproduce asexually are not considered part of a species. c. on a tree of life diagram, speciation is shown by the merging of two different lineages. d.the size of the geographic area inhabited by a population can cause speciation.

The activity of the modern sample is 1.10 bq . how long does that measurement take?

Aragonite shells of clams, snails, or scleractinian corals may be preserved unaltered in cenozoic deposits, but they are generally dissolved or recrystallized in older deposits. true or false