Foraminifera

In a new study published in the Journal Nature Communications, scientists [blank] the universities of Nottingham and Durham and the British Geological Survey (bgs), [blank] discovered the cause of a mass extinction within marine organisms called foraminifera. Foraminifera are an important group in relation to biomass in the deep ocean and the cause of their extinction was [blank] unknown. Scientists tested various possible causes for the mass extinction and were able to discount others such as ocean cooling. Instead they discovered that the extinction was [blank] by a global change in plankton at the surface of the ocean.