How would an anaerobic environment affect photosynthesis

The picture shows a fishing technique called trawling. how might trawling affect marine biodiversity

Is there any species that went extinct in recent years due to natural causes (not caused by human interaction). if so, what caused it?

The double bond between a carbon atom and two oxygen atoms (a molecule of carbon dioxide) has two characteristics. what are they? a. an ionic bond is formed between the oxygen and carbon atoms. b. four valence electrons are shared. c. two valence electrons are shared. d. valence electrons are shared between oxygen atoms.