Calcite-secreting organisms such as and live in the ocean’s sunlit surface waters and form the basis of most marine food webs.

A. coccolithophores; foraminifers
B. diatoms; foraminifers
C. diatoms; radiolarians
D. coccolithophores; radiolarians

Which of the following statements most accurately describes convergent evolution? the process in which two similar species evolve separately from each other and share similar characteristics the process in which a single species evolves into two or more new species the process in which two entirely different species evolve in response to each other the process in which two different species evolve separately from each other but still share similar characteristics

What are two ways that harvesting algae from the ocean may benefit human society? how might the harvest of algae negatively impact the ocean communities where that algae grows? how could this be prevented?

Ascientist is conducting an investigation that involves water, silver, carbon dioxide, and oxygen gas which group of statements best describes all of the materials he is using in the investigation?